81555256

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{521}}^1\times {\mathrm{1151}}^1$

素因数の和:1695

約数の個数: 32

約数和(自身を含む): 162362880

約数和(自身を除く): 80807624

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 521, 1042, 1151, 2084, 2302, 4168, 4604, 8857, 9208, 17714, 19567, 35428, 39134, 70856, 78268, 156536, 599671, 1199342, 2398684, 4797368, 10194407, 20388814, 40777628, 81555256]

約数ペア:

[(1, 81555256), (2, 40777628), (4, 20388814), (8, 10194407), (17, 4797368), (34, 2398684), (68, 1199342), (136, 599671), (521, 156536), (1042, 78268), (1151, 70856), (2084, 39134), (2302, 35428), (4168, 19567), (4604, 17714), (8857, 9208)]