21819651

素因数分解:

$3^1\times 7^2\times {\mathrm{151}}^1\times {\mathrm{983}}^1$

素因数の和:1151

約数の個数: 24

約数和(自身を含む): 34101504

約数和(自身を除く): 12281853

約数列:

[1, 3, 7, 21, 49, 147, 151, 453, 983, 1057, 2949, 3171, 6881, 7399, 20643, 22197, 48167, 144501, 148433, 445299, 1039031, 3117093, 7273217, 21819651]

約数ペア:

[(1, 21819651), (3, 7273217), (7, 3117093), (21, 1039031), (49, 445299), (147, 148433), (151, 144501), (453, 48167), (983, 22197), (1057, 20643), (2949, 7399), (3171, 6881)]