21525880

素因数分解:

$2^3\times 5^1\times {\mathrm{538147}}^1$

素因数の和:538158

約数の個数: 16

約数和(自身を含む): 48433320

約数和(自身を除く): 26907440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 538147, 1076294, 2152588, 2690735, 4305176, 5381470, 10762940, 21525880]

約数ペア:

[(1, 21525880), (2, 10762940), (4, 5381470), (5, 4305176), (8, 2690735), (10, 2152588), (20, 1076294), (40, 538147)]