21105591

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{18661}}^1$

素因数の和:18706

約数の個数: 16

約数和(自身を含む): 31352160

約数和(自身を除く): 10246569

約数列:

[1, 3, 13, 29, 39, 87, 377, 1131, 18661, 55983, 242593, 541169, 727779, 1623507, 7035197, 21105591]

約数ペア:

[(1, 21105591), (3, 7035197), (13, 1623507), (29, 727779), (39, 541169), (87, 242593), (377, 55983), (1131, 18661)]