21402440

素因数分解:

$2^3\times 5^1\times {\mathrm{535061}}^1$

素因数の和:535072

約数の個数: 16

約数和(自身を含む): 48155580

約数和(自身を除く): 26753140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 535061, 1070122, 2140244, 2675305, 4280488, 5350610, 10701220, 21402440]

約数ペア:

[(1, 21402440), (2, 10701220), (4, 5350610), (5, 4280488), (8, 2675305), (10, 2140244), (20, 1070122), (40, 535061)]