257378940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{827}}^1$

素因数の和:881

約数の個数: 288

約数和(自身を含む): 1012677120

約数和(自身を除く): 755298180

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 19, 20, 21, 26, 28, 30, 35, 36, 38, 39, 42, 45, 52, 57, 60, 63, 65, 70, 76, 78, 84, 90, 91, 95, 105, 114, 117, 126, 130, 133, 140, 156, 171, 180, 182, 190, 195, 210, 228, 234, 247, 252, 260, 266, 273, 285, 315, 342, 364, 380, 390, 399, 420, 455, 468, 494, 532, 546, 570, 585, 630, 665, 684, 741, 780, 798, 819, 827, 855, 910, 988, 1092, 1140, 1170, 1197, 1235, 1260, 1330, 1365, 1482, 1596, 1638, 1654, 1710, 1729, 1820, 1995, 2223, 2340, 2394, 2470, 2481, 2660, 2730, 2964, 3276, 3308, 3420, 3458, 3705, 3990, 4095, 4135, 4446, 4788, 4940, 4962, 5187, 5460, 5789, 5985, 6916, 7410, 7443, 7980, 8190, 8270, 8645, 8892, 9924, 10374, 10751, 11115, 11578, 11970, 12405, 14820, 14886, 15561, 15713, 16380, 16540, 17290, 17367, 20748, 21502, 22230, 23156, 23940, 24810, 25935, 28945, 29772, 31122, 31426, 32253, 34580, 34734, 37215, 43004, 44460, 47139, 49620, 51870, 52101, 53755, 57890, 62244, 62852, 64506, 69468, 74430, 75257, 77805, 78565, 86835, 94278, 96759, 103740, 104202, 107510, 109991, 115780, 129012, 141417, 148860, 150514, 155610, 157130, 161265, 173670, 188556, 193518, 204269, 208404, 215020, 219982, 225771, 235695, 260505, 282834, 301028, 311220, 314260, 322530, 329973, 347340, 376285, 387036, 408538, 439964, 451542, 471390, 483795, 521010, 549955, 565668, 612807, 645060, 659946, 677313, 707085, 752570, 817076, 903084, 942780, 967590, 989919, 1021345, 1042020, 1099910, 1128855, 1225614, 1319892, 1354626, 1414170, 1429883, 1505140, 1649865, 1838421, 1935180, 1979838, 2042690, 2199820, 2257710, 2451228, 2709252, 2828340, 2859766, 3064035, 3299730, 3386565, 3676842, 3959676, 4085380, 4289649, 4515420, 4949595, 5719532, 6128070, 6599460, 6773130, 7149415, 7353684, 8579298, 9192105, 9899190, 12256140, 12868947, 13546260, 14298830, 17158596, 18384210, 19798380, 21448245, 25737894, 28597660, 36768420, 42896490, 51475788, 64344735, 85792980, 128689470, 257378940]

約数ペア:

[(1, 257378940), (2, 128689470), (3, 85792980), (4, 64344735), (5, 51475788), (6, 42896490), (7, 36768420), (9, 28597660), (10, 25737894), (12, 21448245), (13, 19798380), (14, 18384210), (15, 17158596), (18, 14298830), (19, 13546260), (20, 12868947), (21, 12256140), (26, 9899190), (28, 9192105), (30, 8579298), (35, 7353684), (36, 7149415), (38, 6773130), (39, 6599460), (42, 6128070), (45, 5719532), (52, 4949595), (57, 4515420), (60, 4289649), (63, 4085380), (65, 3959676), (70, 3676842), (76, 3386565), (78, 3299730), (84, 3064035), (90, 2859766), (91, 2828340), (95, 2709252), (105, 2451228), (114, 2257710), (117, 2199820), (126, 2042690), (130, 1979838), (133, 1935180), (140, 1838421), (156, 1649865), (171, 1505140), (180, 1429883), (182, 1414170), (190, 1354626), (195, 1319892), (210, 1225614), (228, 1128855), (234, 1099910), (247, 1042020), (252, 1021345), (260, 989919), (266, 967590), (273, 942780), (285, 903084), (315, 817076), (342, 752570), (364, 707085), (380, 677313), (390, 659946), (399, 645060), (420, 612807), (455, 565668), (468, 549955), (494, 521010), (532, 483795), (546, 471390), (570, 451542), (585, 439964), (630, 408538), (665, 387036), (684, 376285), (741, 347340), (780, 329973), (798, 322530), (819, 314260), (827, 311220), (855, 301028), (910, 282834), (988, 260505), (1092, 235695), (1140, 225771), (1170, 219982), (1197, 215020), (1235, 208404), (1260, 204269), (1330, 193518), (1365, 188556), (1482, 173670), (1596, 161265), (1638, 157130), (1654, 155610), (1710, 150514), (1729, 148860), (1820, 141417), (1995, 129012), (2223, 115780), (2340, 109991), (2394, 107510), (2470, 104202), (2481, 103740), (2660, 96759), (2730, 94278), (2964, 86835), (3276, 78565), (3308, 77805), (3420, 75257), (3458, 74430), (3705, 69468), (3990, 64506), (4095, 62852), (4135, 62244), (4446, 57890), (4788, 53755), (4940, 52101), (4962, 51870), (5187, 49620), (5460, 47139), (5789, 44460), (5985, 43004), (6916, 37215), (7410, 34734), (7443, 34580), (7980, 32253), (8190, 31426), (8270, 31122), (8645, 29772), (8892, 28945), (9924, 25935), (10374, 24810), (10751, 23940), (11115, 23156), (11578, 22230), (11970, 21502), (12405, 20748), (14820, 17367), (14886, 17290), (15561, 16540), (15713, 16380)]