20018565

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{617}}^1$

素因数の和:738

約数の個数: 48

約数和(自身を含む): 40105728

約数和(自身を除く): 20087163

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 103, 105, 309, 315, 515, 617, 721, 927, 1545, 1851, 2163, 3085, 3605, 4319, 4635, 5553, 6489, 9255, 10815, 12957, 21595, 27765, 32445, 38871, 63551, 64785, 190653, 194355, 317755, 444857, 571959, 953265, 1334571, 2224285, 2859795, 4003713, 6672855, 20018565]

約数ペア:

[(1, 20018565), (3, 6672855), (5, 4003713), (7, 2859795), (9, 2224285), (15, 1334571), (21, 953265), (35, 571959), (45, 444857), (63, 317755), (103, 194355), (105, 190653), (309, 64785), (315, 63551), (515, 38871), (617, 32445), (721, 27765), (927, 21595), (1545, 12957), (1851, 10815), (2163, 9255), (3085, 6489), (3605, 5553), (4319, 4635)]