19917415

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{491}}^1$

素因数の和:583

約数の個数: 32

約数和(自身を含む): 29283840

約数和(自身を除く): 9366425

約数列:

[1, 5, 7, 19, 35, 61, 95, 133, 305, 427, 491, 665, 1159, 2135, 2455, 3437, 5795, 8113, 9329, 17185, 29951, 40565, 46645, 65303, 149755, 209657, 326515, 569069, 1048285, 2845345, 3983483, 19917415]

約数ペア:

[(1, 19917415), (5, 3983483), (7, 2845345), (19, 1048285), (35, 569069), (61, 326515), (95, 209657), (133, 149755), (305, 65303), (427, 46645), (491, 40565), (665, 29951), (1159, 17185), (2135, 9329), (2455, 8113), (3437, 5795)]