9821980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{70157}}^1$

素因数の和:70173

約数の個数: 24

約数和(自身を含む): 23573088

約数和(自身を除く): 13751108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 70157, 140314, 280628, 350785, 491099, 701570, 982198, 1403140, 1964396, 2455495, 4910990, 9821980]

約数ペア:

[(1, 9821980), (2, 4910990), (4, 2455495), (5, 1964396), (7, 1403140), (10, 982198), (14, 701570), (20, 491099), (28, 350785), (35, 280628), (70, 140314), (140, 70157)]