21991040158

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{139}}^1\times {\mathrm{13693}}^1$

素因数の和:13996

約数の個数: 32

約数和(自身を含む): 34163791200

約数和(自身を除く): 12172751042

約数列:

[1, 2, 53, 106, 109, 139, 218, 278, 5777, 7367, 11554, 13693, 14734, 15151, 27386, 30302, 725729, 803003, 1451458, 1492537, 1606006, 1903327, 2985074, 3806654, 79104461, 100876331, 158208922, 201752662, 207462643, 414925286, 10995520079, 21991040158]

約数ペア:

[(1, 21991040158), (2, 10995520079), (53, 414925286), (106, 207462643), (109, 201752662), (139, 158208922), (218, 100876331), (278, 79104461), (5777, 3806654), (7367, 2985074), (11554, 1903327), (13693, 1606006), (14734, 1492537), (15151, 1451458), (27386, 803003), (30302, 725729)]