21459789

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{4703}}^1$

素因数の和:4738

約数の個数: 24

約数和(自身を含む): 34433280

約数和(自身を除く): 12973491

約数列:

[1, 3, 9, 13, 27, 39, 117, 169, 351, 507, 1521, 4563, 4703, 14109, 42327, 61139, 126981, 183417, 550251, 794807, 1650753, 2384421, 7153263, 21459789]

約数ペア:

[(1, 21459789), (3, 7153263), (9, 2384421), (13, 1650753), (27, 794807), (39, 550251), (117, 183417), (169, 126981), (351, 61139), (507, 42327), (1521, 14109), (4563, 4703)]