21202731

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{2711}}^1$

素因数の和:2807

約数の個数: 24

約数和(自身を含む): 33845760

約数和(自身を除く): 12643029

約数列:

[1, 3, 9, 11, 33, 79, 99, 237, 711, 869, 2607, 2711, 7821, 8133, 24399, 29821, 89463, 214169, 268389, 642507, 1927521, 2355859, 7067577, 21202731]

約数ペア:

[(1, 21202731), (3, 7067577), (9, 2355859), (11, 1927521), (33, 642507), (79, 268389), (99, 214169), (237, 89463), (711, 29821), (869, 24399), (2607, 8133), (2711, 7821)]