388978820

素因数分解:

$2^2\times 5^1\times {\mathrm{241}}^1\times {\mathrm{80701}}^1$

素因数の和:80951

約数の個数: 24

約数和(自身を含む): 820255128

約数和(自身を除く): 431276308

約数列:

[1, 2, 4, 5, 10, 20, 241, 482, 964, 1205, 2410, 4820, 80701, 161402, 322804, 403505, 807010, 1614020, 19448941, 38897882, 77795764, 97244705, 194489410, 388978820]

約数ペア:

[(1, 388978820), (2, 194489410), (4, 97244705), (5, 77795764), (10, 38897882), (20, 19448941), (241, 1614020), (482, 807010), (964, 403505), (1205, 322804), (2410, 161402), (4820, 80701)]