1812207020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{997}}^1\times {\mathrm{6991}}^1$

素因数の和:8010

約数の個数: 48

約数和(自身を含む): 4103073408

約数和(自身を除く): 2290866388

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 997, 1994, 3988, 4985, 6991, 9970, 12961, 13982, 19940, 25922, 27964, 34955, 51844, 64805, 69910, 90883, 129610, 139820, 181766, 259220, 363532, 454415, 908830, 1817660, 6970027, 13940054, 27880108, 34850135, 69700270, 90610351, 139400540, 181220702, 362441404, 453051755, 906103510, 1812207020]

約数ペア:

[(1, 1812207020), (2, 906103510), (4, 453051755), (5, 362441404), (10, 181220702), (13, 139400540), (20, 90610351), (26, 69700270), (52, 34850135), (65, 27880108), (130, 13940054), (260, 6970027), (997, 1817660), (1994, 908830), (3988, 454415), (4985, 363532), (6991, 259220), (9970, 181766), (12961, 139820), (13982, 129610), (19940, 90883), (25922, 69910), (27964, 64805), (34955, 51844)]