21486829

素因数分解:

$7^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{443}}^1$

素因数の和:517

約数の個数: 24

約数和(自身を含む): 27300672

約数和(自身を除く): 5813843

約数列:

[1, 7, 13, 41, 91, 169, 287, 443, 533, 1183, 3101, 3731, 5759, 6929, 18163, 40313, 48503, 74867, 127141, 236119, 524069, 1652833, 3069547, 21486829]

約数ペア:

[(1, 21486829), (7, 3069547), (13, 1652833), (41, 524069), (91, 236119), (169, 127141), (287, 74867), (443, 48503), (533, 40313), (1183, 18163), (3101, 6929), (3731, 5759)]