18810415

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{587}}^1$

素因数の和:651

約数の個数: 32

約数和(自身を含む): 26671680

約数和(自身を除く): 7861265

約数列:

[1, 5, 13, 17, 29, 65, 85, 145, 221, 377, 493, 587, 1105, 1885, 2465, 2935, 6409, 7631, 9979, 17023, 32045, 38155, 49895, 85115, 129727, 221299, 289391, 648635, 1106495, 1446955, 3762083, 18810415]

約数ペア:

[(1, 18810415), (5, 3762083), (13, 1446955), (17, 1106495), (29, 648635), (65, 289391), (85, 221299), (145, 129727), (221, 85115), (377, 49895), (493, 38155), (587, 32045), (1105, 17023), (1885, 9979), (2465, 7631), (2935, 6409)]