21704715

素因数分解:

$3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{7907}}^1$

素因数の和:7979

約数の個数: 24

約数和(自身を含む): 38243088

約数和(自身を除く): 16538373

約数列:

[1, 3, 5, 9, 15, 45, 61, 183, 305, 549, 915, 2745, 7907, 23721, 39535, 71163, 118605, 355815, 482327, 1446981, 2411635, 4340943, 7234905, 21704715]

約数ペア:

[(1, 21704715), (3, 7234905), (5, 4340943), (9, 2411635), (15, 1446981), (45, 482327), (61, 355815), (183, 118605), (305, 71163), (549, 39535), (915, 23721), (2745, 7907)]