20346972680

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1\times {\mathrm{26437}}^1$

素因数の和:26790

約数の個数: 64

約数和(自身を含む): 46598561280

約数和(自身を除く): 26251588600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 271, 284, 355, 542, 568, 710, 1084, 1355, 1420, 2168, 2710, 2840, 5420, 10840, 19241, 26437, 38482, 52874, 76964, 96205, 105748, 132185, 153928, 192410, 211496, 264370, 384820, 528740, 769640, 1057480, 1877027, 3754054, 7164427, 7508108, 9385135, 14328854, 15016216, 18770270, 28657708, 35822135, 37540540, 57315416, 71644270, 75081080, 143288540, 286577080, 508674317, 1017348634, 2034697268, 2543371585, 4069394536, 5086743170, 10173486340, 20346972680]

約数ペア:

[(1, 20346972680), (2, 10173486340), (4, 5086743170), (5, 4069394536), (8, 2543371585), (10, 2034697268), (20, 1017348634), (40, 508674317), (71, 286577080), (142, 143288540), (271, 75081080), (284, 71644270), (355, 57315416), (542, 37540540), (568, 35822135), (710, 28657708), (1084, 18770270), (1355, 15016216), (1420, 14328854), (2168, 9385135), (2710, 7508108), (2840, 7164427), (5420, 3754054), (10840, 1877027), (19241, 1057480), (26437, 769640), (38482, 528740), (52874, 384820), (76964, 264370), (96205, 211496), (105748, 192410), (132185, 153928)]