21390159

素因数分解:

$3^1\times 7^1\times {\mathrm{971}}^1\times {\mathrm{1049}}^1$

素因数の和:2030

約数の個数: 16

約数和(自身を含む): 32659200

約数和(自身を除く): 11269041

約数列:

[1, 3, 7, 21, 971, 1049, 2913, 3147, 6797, 7343, 20391, 22029, 1018579, 3055737, 7130053, 21390159]

約数ペア:

[(1, 21390159), (3, 7130053), (7, 3055737), (21, 1018579), (971, 22029), (1049, 20391), (2913, 7343), (3147, 6797)]