81100115

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{107}}^1\times {\mathrm{241}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 107262144

約数和(自身を除く): 26162029

約数列:

[1, 5, 17, 37, 85, 107, 185, 241, 535, 629, 1205, 1819, 3145, 3959, 4097, 8917, 9095, 19795, 20485, 25787, 44585, 67303, 128935, 151589, 336515, 438379, 757945, 954119, 2191895, 4770595, 16220023, 81100115]

約数ペア:

[(1, 81100115), (5, 16220023), (17, 4770595), (37, 2191895), (85, 954119), (107, 757945), (185, 438379), (241, 336515), (535, 151589), (629, 128935), (1205, 67303), (1819, 44585), (3145, 25787), (3959, 20485), (4097, 19795), (8917, 9095)]