20688843

素因数分解:

$3^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{5443}}^1$

素因数の和:5634

約数の個数: 16

約数和(自身を含む): 31705856

約数和(自身を除く): 11017013

約数列:

[1, 3, 7, 21, 181, 543, 1267, 3801, 5443, 16329, 38101, 114303, 985183, 2955549, 6896281, 20688843]

約数ペア:

[(1, 20688843), (3, 6896281), (7, 2955549), (21, 985183), (181, 114303), (543, 38101), (1267, 16329), (3801, 5443)]