398371010

素因数分解:

$2^1\times 5^1\times {\mathrm{389}}^1\times {\mathrm{102409}}^1$

素因数の和:102805

約数の個数: 16

約数和(自身を含む): 718918200

約数和(自身を除く): 320547190

約数列:

[1, 2, 5, 10, 389, 778, 1945, 3890, 102409, 204818, 512045, 1024090, 39837101, 79674202, 199185505, 398371010]

約数ペア:

[(1, 398371010), (2, 199185505), (5, 79674202), (10, 39837101), (389, 1024090), (778, 512045), (1945, 204818), (3890, 102409)]