21017848

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{154543}}^1$

素因数の和:154566

約数の個数: 16

約数和(自身を含む): 41726880

約数和(自身を除く): 20709032

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 154543, 309086, 618172, 1236344, 2627231, 5254462, 10508924, 21017848]

約数ペア:

[(1, 21017848), (2, 10508924), (4, 5254462), (8, 2627231), (17, 1236344), (34, 618172), (68, 309086), (136, 154543)]