20117290

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{6961}}^1$

素因数の和:7002

約数の個数: 24

約数和(自身を含む): 38472012

約数和(自身を除く): 18354722

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 289, 578, 1445, 2890, 6961, 13922, 34805, 69610, 118337, 236674, 591685, 1183370, 2011729, 4023458, 10058645, 20117290]

約数ペア:

[(1, 20117290), (2, 10058645), (5, 4023458), (10, 2011729), (17, 1183370), (34, 591685), (85, 236674), (170, 118337), (289, 69610), (578, 34805), (1445, 13922), (2890, 6961)]