21299145

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1861}}^1$

素因数の和:1985

約数の個数: 32

約数和(自身を含む): 39325440

約数和(自身を除く): 18026295

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 109, 327, 545, 763, 1635, 1861, 2289, 3815, 5583, 9305, 11445, 13027, 27915, 39081, 65135, 195405, 202849, 608547, 1014245, 1419943, 3042735, 4259829, 7099715, 21299145]

約数ペア:

[(1, 21299145), (3, 7099715), (5, 4259829), (7, 3042735), (15, 1419943), (21, 1014245), (35, 608547), (105, 202849), (109, 195405), (327, 65135), (545, 39081), (763, 27915), (1635, 13027), (1861, 11445), (2289, 9305), (3815, 5583)]