20217998980

素因数分解:

$2^2\times 5^1\times {\mathrm{40823}}^1\times {\mathrm{24763}}^1$

素因数の和:65595

約数の個数: 24

約数和(自身を含む): 42460552512

約数和(自身を除く): 22242553532

約数列:

[1, 2, 4, 5, 10, 20, 24763, 40823, 49526, 81646, 99052, 123815, 163292, 204115, 247630, 408230, 495260, 816460, 1010899949, 2021799898, 4043599796, 5054499745, 10108999490, 20217998980]

約数ペア:

[(1, 20217998980), (2, 10108999490), (4, 5054499745), (5, 4043599796), (10, 2021799898), (20, 1010899949), (24763, 816460), (40823, 495260), (49526, 408230), (81646, 247630), (99052, 204115), (123815, 163292)]