19913005

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18353}}^1$

素因数の和:18396

約数の個数: 16

約数和(自身を含む): 28191744

約数和(自身を除く): 8278739

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 18353, 91765, 128471, 568943, 642355, 2844715, 3982601, 19913005]

約数ペア:

[(1, 19913005), (5, 3982601), (7, 2844715), (31, 642355), (35, 568943), (155, 128471), (217, 91765), (1085, 18353)]