20212509640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{379}}^1\times {\mathrm{1049}}^1$

素因数の和:1511

約数の個数: 128

約数和(自身を含む): 48263040000

約数和(自身を除く): 28050530360

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 164, 205, 248, 310, 328, 379, 410, 620, 758, 820, 1049, 1240, 1271, 1516, 1640, 1895, 2098, 2542, 3032, 3790, 4196, 5084, 5245, 6355, 7580, 8392, 10168, 10490, 11749, 12710, 15160, 15539, 20980, 23498, 25420, 31078, 32519, 41960, 43009, 46996, 50840, 58745, 62156, 65038, 77695, 86018, 93992, 117490, 124312, 130076, 155390, 162595, 172036, 215045, 234980, 260152, 310780, 325190, 344072, 397571, 430090, 469960, 481709, 621560, 650380, 795142, 860180, 963418, 1300760, 1333279, 1590284, 1720360, 1926836, 1987855, 2408545, 2666558, 3180568, 3853672, 3975710, 4817090, 5333116, 6666395, 7951420, 9634180, 10666232, 12324701, 13332790, 15902840, 16300411, 19268360, 24649402, 26665580, 32600822, 49298804, 53331160, 61623505, 65201644, 81502055, 98597608, 123247010, 130403288, 163004110, 246494020, 326008220, 492988040, 505312741, 652016440, 1010625482, 2021250964, 2526563705, 4042501928, 5053127410, 10106254820, 20212509640]

約数ペア:

[(1, 20212509640), (2, 10106254820), (4, 5053127410), (5, 4042501928), (8, 2526563705), (10, 2021250964), (20, 1010625482), (31, 652016440), (40, 505312741), (41, 492988040), (62, 326008220), (82, 246494020), (124, 163004110), (155, 130403288), (164, 123247010), (205, 98597608), (248, 81502055), (310, 65201644), (328, 61623505), (379, 53331160), (410, 49298804), (620, 32600822), (758, 26665580), (820, 24649402), (1049, 19268360), (1240, 16300411), (1271, 15902840), (1516, 13332790), (1640, 12324701), (1895, 10666232), (2098, 9634180), (2542, 7951420), (3032, 6666395), (3790, 5333116), (4196, 4817090), (5084, 3975710), (5245, 3853672), (6355, 3180568), (7580, 2666558), (8392, 2408545), (10168, 1987855), (10490, 1926836), (11749, 1720360), (12710, 1590284), (15160, 1333279), (15539, 1300760), (20980, 963418), (23498, 860180), (25420, 795142), (31078, 650380), (32519, 621560), (41960, 481709), (43009, 469960), (46996, 430090), (50840, 397571), (58745, 344072), (62156, 325190), (65038, 310780), (77695, 260152), (86018, 234980), (93992, 215045), (117490, 172036), (124312, 162595), (130076, 155390)]