21211510

素因数分解:

$2^1\times 5^1\times {\mathrm{503}}^1\times {\mathrm{4217}}^1$

素因数の和:4727

約数の個数: 16

約数和(自身を含む): 38265696

約数和(自身を除く): 17054186

約数列:

[1, 2, 5, 10, 503, 1006, 2515, 4217, 5030, 8434, 21085, 42170, 2121151, 4242302, 10605755, 21211510]

約数ペア:

[(1, 21211510), (2, 10605755), (5, 4242302), (10, 2121151), (503, 42170), (1006, 21085), (2515, 8434), (4217, 5030)]