21559779

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{173}}^1\times {\mathrm{227}}^1$

素因数の和:467

約数の個数: 24

約数和(自身を含む): 31975632

約数和(自身を除く): 10415853

約数列:

[1, 3, 9, 61, 173, 183, 227, 519, 549, 681, 1557, 2043, 10553, 13847, 31659, 39271, 41541, 94977, 117813, 124623, 353439, 2395531, 7186593, 21559779]

約数ペア:

[(1, 21559779), (3, 7186593), (9, 2395531), (61, 353439), (173, 124623), (183, 117813), (227, 94977), (519, 41541), (549, 39271), (681, 31659), (1557, 13847), (2043, 10553)]