20125978

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:286

約数の個数: 32

約数和(自身を含む): 33105600

約数和(自身を除く): 12979622

約数列:

[1, 2, 19, 38, 43, 86, 109, 113, 218, 226, 817, 1634, 2071, 2147, 4142, 4294, 4687, 4859, 9374, 9718, 12317, 24634, 89053, 92321, 178106, 184642, 234023, 468046, 529631, 1059262, 10062989, 20125978]

約数ペア:

[(1, 20125978), (2, 10062989), (19, 1059262), (38, 529631), (43, 468046), (86, 234023), (109, 184642), (113, 178106), (218, 92321), (226, 89053), (817, 24634), (1634, 12317), (2071, 9718), (2147, 9374), (4142, 4859), (4294, 4687)]