21018699

素因数分解:

$3^2\times {\mathrm{13}}^3\times {\mathrm{1063}}^1$

素因数の和:1108

約数の個数: 24

約数和(自身を含む): 32920160

約数和(自身を除く): 11901461

約数列:

[1, 3, 9, 13, 39, 117, 169, 507, 1063, 1521, 2197, 3189, 6591, 9567, 13819, 19773, 41457, 124371, 179647, 538941, 1616823, 2335411, 7006233, 21018699]

約数ペア:

[(1, 21018699), (3, 7006233), (9, 2335411), (13, 1616823), (39, 538941), (117, 179647), (169, 124371), (507, 41457), (1063, 19773), (1521, 13819), (2197, 9567), (3189, 6591)]