257556780

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1931}}^1$

素因数の和:1981

約数の個数: 192

約数和(自身を含む): 908812800

約数和(自身を除く): 651256020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 19, 20, 26, 27, 30, 36, 38, 39, 45, 52, 54, 57, 60, 65, 76, 78, 90, 95, 108, 114, 117, 130, 135, 156, 171, 180, 190, 195, 228, 234, 247, 260, 270, 285, 342, 351, 380, 390, 468, 494, 513, 540, 570, 585, 684, 702, 741, 780, 855, 988, 1026, 1140, 1170, 1235, 1404, 1482, 1710, 1755, 1931, 2052, 2223, 2340, 2470, 2565, 2964, 3420, 3510, 3705, 3862, 4446, 4940, 5130, 5793, 6669, 7020, 7410, 7724, 8892, 9655, 10260, 11115, 11586, 13338, 14820, 17379, 19310, 22230, 23172, 25103, 26676, 28965, 33345, 34758, 36689, 38620, 44460, 50206, 52137, 57930, 66690, 69516, 73378, 75309, 86895, 100412, 104274, 110067, 115860, 125515, 133380, 146756, 150618, 173790, 183445, 208548, 220134, 225927, 251030, 260685, 301236, 330201, 347580, 366890, 376545, 440268, 451854, 476957, 502060, 521370, 550335, 660402, 677781, 733780, 753090, 903708, 953914, 990603, 1042740, 1100670, 1129635, 1320804, 1355562, 1430871, 1506180, 1651005, 1907828, 1981206, 2201340, 2259270, 2384785, 2711124, 2861742, 3302010, 3388905, 3962412, 4292613, 4518540, 4769570, 4953015, 5723484, 6604020, 6777810, 7154355, 8585226, 9539140, 9906030, 12877839, 13555620, 14308710, 17170452, 19812060, 21463065, 25755678, 28617420, 42926130, 51511356, 64389195, 85852260, 128778390, 257556780]

約数ペア:

[(1, 257556780), (2, 128778390), (3, 85852260), (4, 64389195), (5, 51511356), (6, 42926130), (9, 28617420), (10, 25755678), (12, 21463065), (13, 19812060), (15, 17170452), (18, 14308710), (19, 13555620), (20, 12877839), (26, 9906030), (27, 9539140), (30, 8585226), (36, 7154355), (38, 6777810), (39, 6604020), (45, 5723484), (52, 4953015), (54, 4769570), (57, 4518540), (60, 4292613), (65, 3962412), (76, 3388905), (78, 3302010), (90, 2861742), (95, 2711124), (108, 2384785), (114, 2259270), (117, 2201340), (130, 1981206), (135, 1907828), (156, 1651005), (171, 1506180), (180, 1430871), (190, 1355562), (195, 1320804), (228, 1129635), (234, 1100670), (247, 1042740), (260, 990603), (270, 953914), (285, 903708), (342, 753090), (351, 733780), (380, 677781), (390, 660402), (468, 550335), (494, 521370), (513, 502060), (540, 476957), (570, 451854), (585, 440268), (684, 376545), (702, 366890), (741, 347580), (780, 330201), (855, 301236), (988, 260685), (1026, 251030), (1140, 225927), (1170, 220134), (1235, 208548), (1404, 183445), (1482, 173790), (1710, 150618), (1755, 146756), (1931, 133380), (2052, 125515), (2223, 115860), (2340, 110067), (2470, 104274), (2565, 100412), (2964, 86895), (3420, 75309), (3510, 73378), (3705, 69516), (3862, 66690), (4446, 57930), (4940, 52137), (5130, 50206), (5793, 44460), (6669, 38620), (7020, 36689), (7410, 34758), (7724, 33345), (8892, 28965), (9655, 26676), (10260, 25103), (11115, 23172), (11586, 22230), (13338, 19310), (14820, 17379)]