21213099

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{63703}}^1$

素因数の和:63746

約数の個数: 12

約数和(自身を含む): 31469776

約数和(自身を除く): 10256677

約数列:

[1, 3, 9, 37, 111, 333, 63703, 191109, 573327, 2357011, 7071033, 21213099]

約数ペア:

[(1, 21213099), (3, 7071033), (9, 2357011), (37, 573327), (111, 191109), (333, 63703)]