21469941

素因数分解:

$3^4\times {\mathrm{401}}^1\times {\mathrm{661}}^1$

素因数の和:1074

約数の個数: 20

約数和(自身を含む): 32201004

約数和(自身を除く): 10731063

約数列:

[1, 3, 9, 27, 81, 401, 661, 1203, 1983, 3609, 5949, 10827, 17847, 32481, 53541, 265061, 795183, 2385549, 7156647, 21469941]

約数ペア:

[(1, 21469941), (3, 7156647), (9, 2385549), (27, 795183), (81, 265061), (401, 53541), (661, 32481), (1203, 17847), (1983, 10827), (3609, 5949)]