21576490

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{269}}^1\times {\mathrm{617}}^1$

素因数の和:906

約数の個数: 32

約数和(自身を含む): 42048720

約数和(自身を除く): 20472230

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 269, 538, 617, 1234, 1345, 2690, 3085, 3497, 6170, 6994, 8021, 16042, 17485, 34970, 40105, 80210, 165973, 331946, 829865, 1659730, 2157649, 4315298, 10788245, 21576490]

約数ペア:

[(1, 21576490), (2, 10788245), (5, 4315298), (10, 2157649), (13, 1659730), (26, 829865), (65, 331946), (130, 165973), (269, 80210), (538, 40105), (617, 34970), (1234, 17485), (1345, 16042), (2690, 8021), (3085, 6994), (3497, 6170)]