21205827

素因数分解:

$3^3\times {\mathrm{167}}^1\times {\mathrm{4703}}^1$

素因数の和:4879

約数の個数: 16

約数和(自身を含む): 31610880

約数和(自身を除く): 10405053

約数列:

[1, 3, 9, 27, 167, 501, 1503, 4509, 4703, 14109, 42327, 126981, 785401, 2356203, 7068609, 21205827]

約数ペア:

[(1, 21205827), (3, 7068609), (9, 2356203), (27, 785401), (167, 126981), (501, 42327), (1503, 14109), (4509, 4703)]