253136920

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{61441}}^1$

素因数の和:61555

約数の個数: 32

約数和(自身を含む): 575097120

約数和(自身を除く): 321960200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 61441, 122882, 245764, 307205, 491528, 614410, 1228820, 2457640, 6328423, 12656846, 25313692, 31642115, 50627384, 63284230, 126568460, 253136920]

約数ペア:

[(1, 253136920), (2, 126568460), (4, 63284230), (5, 50627384), (8, 31642115), (10, 25313692), (20, 12656846), (40, 6328423), (103, 2457640), (206, 1228820), (412, 614410), (515, 491528), (824, 307205), (1030, 245764), (2060, 122882), (4120, 61441)]