201216980

素因数分解:

$2^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{61723}}^1$

素因数の和:61895

約数の個数: 24

約数和(自身を含む): 425154912

約数和(自身を除く): 223937932

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 61723, 123446, 246892, 308615, 617230, 1234460, 10060849, 20121698, 40243396, 50304245, 100608490, 201216980]

約数ペア:

[(1, 201216980), (2, 100608490), (4, 50304245), (5, 40243396), (10, 20121698), (20, 10060849), (163, 1234460), (326, 617230), (652, 308615), (815, 246892), (1630, 123446), (3260, 61723)]