20851740

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1$

素因数の和:121

約数の個数: 288

約数和(自身を含む): 83166720

約数和(自身を除く): 62314980

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, 67, 70, 76, 78, 84, 90, 91, 95, 105, 114, 117, 126, 130, 133, 134, 140, 156, 171, 180, 182, 190, 195, 201, 210, 228, 234, 247, 252, 260, 266, 268, 273, 285, 315, 335, 342, 364, 380, 390, 399, 402, 420, 455, 468, 469, 494, 532, 546, 570, 585, 603, 630, 665, 670, 684, 741, 780, 798, 804, 819, 855, 871, 910, 938, 988, 1005, 1092, 1140, 1170, 1197, 1206, 1235, 1260, 1273, 1330, 1340, 1365, 1407, 1482, 1596, 1638, 1710, 1729, 1742, 1820, 1876, 1995, 2010, 2223, 2340, 2345, 2394, 2412, 2470, 2546, 2613, 2660, 2730, 2814, 2964, 3015, 3276, 3420, 3458, 3484, 3705, 3819, 3990, 4020, 4095, 4221, 4355, 4446, 4690, 4788, 4940, 5092, 5187, 5226, 5460, 5628, 5985, 6030, 6097, 6365, 6916, 7035, 7410, 7638, 7839, 7980, 8190, 8442, 8645, 8710, 8892, 8911, 9380, 10374, 10452, 11115, 11457, 11970, 12060, 12194, 12730, 13065, 14070, 14820, 15276, 15561, 15678, 16380, 16549, 16884, 17290, 17420, 17822, 18291, 19095, 20748, 21105, 22230, 22914, 23940, 24388, 25460, 25935, 26130, 26733, 28140, 30485, 31122, 31356, 33098, 34580, 35644, 36582, 38190, 39195, 42210, 44460, 44555, 45828, 49647, 51870, 52260, 53466, 54873, 57285, 60970, 62244, 66196, 73164, 76380, 77805, 78390, 80199, 82745, 84420, 89110, 91455, 99294, 103740, 106932, 109746, 114570, 115843, 121940, 133665, 148941, 155610, 156780, 160398, 165490, 178220, 182910, 198588, 219492, 229140, 231686, 248235, 267330, 274365, 297882, 311220, 320796, 330980, 347529, 365820, 400995, 463372, 496470, 534660, 548730, 579215, 595764, 695058, 744705, 801990, 992940, 1042587, 1097460, 1158430, 1390116, 1489410, 1603980, 1737645, 2085174, 2316860, 2978820, 3475290, 4170348, 5212935, 6950580, 10425870, 20851740]

約数ペア:

[(1, 20851740), (2, 10425870), (3, 6950580), (4, 5212935), (5, 4170348), (6, 3475290), (7, 2978820), (9, 2316860), (10, 2085174), (12, 1737645), (13, 1603980), (14, 1489410), (15, 1390116), (18, 1158430), (19, 1097460), (20, 1042587), (21, 992940), (26, 801990), (28, 744705), (30, 695058), (35, 595764), (36, 579215), (38, 548730), (39, 534660), (42, 496470), (45, 463372), (52, 400995), (57, 365820), (60, 347529), (63, 330980), (65, 320796), (67, 311220), (70, 297882), (76, 274365), (78, 267330), (84, 248235), (90, 231686), (91, 229140), (95, 219492), (105, 198588), (114, 182910), (117, 178220), (126, 165490), (130, 160398), (133, 156780), (134, 155610), (140, 148941), (156, 133665), (171, 121940), (180, 115843), (182, 114570), (190, 109746), (195, 106932), (201, 103740), (210, 99294), (228, 91455), (234, 89110), (247, 84420), (252, 82745), (260, 80199), (266, 78390), (268, 77805), (273, 76380), (285, 73164), (315, 66196), (335, 62244), (342, 60970), (364, 57285), (380, 54873), (390, 53466), (399, 52260), (402, 51870), (420, 49647), (455, 45828), (468, 44555), (469, 44460), (494, 42210), (532, 39195), (546, 38190), (570, 36582), (585, 35644), (603, 34580), (630, 33098), (665, 31356), (670, 31122), (684, 30485), (741, 28140), (780, 26733), (798, 26130), (804, 25935), (819, 25460), (855, 24388), (871, 23940), (910, 22914), (938, 22230), (988, 21105), (1005, 20748), (1092, 19095), (1140, 18291), (1170, 17822), (1197, 17420), (1206, 17290), (1235, 16884), (1260, 16549), (1273, 16380), (1330, 15678), (1340, 15561), (1365, 15276), (1407, 14820), (1482, 14070), (1596, 13065), (1638, 12730), (1710, 12194), (1729, 12060), (1742, 11970), (1820, 11457), (1876, 11115), (1995, 10452), (2010, 10374), (2223, 9380), (2340, 8911), (2345, 8892), (2394, 8710), (2412, 8645), (2470, 8442), (2546, 8190), (2613, 7980), (2660, 7839), (2730, 7638), (2814, 7410), (2964, 7035), (3015, 6916), (3276, 6365), (3420, 6097), (3458, 6030), (3484, 5985), (3705, 5628), (3819, 5460), (3990, 5226), (4020, 5187), (4095, 5092), (4221, 4940), (4355, 4788), (4446, 4690)]