21725690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2083}}^1$

素因数の和:2246

約数の個数: 32

約数和(自身を含む): 45014400

約数和(自身を除く): 23288710

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 149, 298, 745, 1043, 1490, 2083, 2086, 4166, 5215, 10415, 10430, 14581, 20830, 29162, 72905, 145810, 310367, 620734, 1551835, 2172569, 3103670, 4345138, 10862845, 21725690]

約数ペア:

[(1, 21725690), (2, 10862845), (5, 4345138), (7, 3103670), (10, 2172569), (14, 1551835), (35, 620734), (70, 310367), (149, 145810), (298, 72905), (745, 29162), (1043, 20830), (1490, 14581), (2083, 10430), (2086, 10415), (4166, 5215)]