21378273

素因数分解:

$3^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{2617}}^1$

素因数の和:3016

約数の個数: 16

約数和(自身を含む): 32672640

約数和(自身を除く): 11294367

約数列:

[1, 3, 7, 21, 389, 1167, 2617, 2723, 7851, 8169, 18319, 54957, 1018013, 3054039, 7126091, 21378273]

約数ペア:

[(1, 21378273), (3, 7126091), (7, 3054039), (21, 1018013), (389, 54957), (1167, 18319), (2617, 8169), (2723, 7851)]