21965560

素因数分解:

$2^3\times 5^1\times {\mathrm{549139}}^1$

素因数の和:549150

約数の個数: 16

約数和(自身を含む): 49422600

約数和(自身を除く): 27457040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 549139, 1098278, 2196556, 2745695, 4393112, 5491390, 10982780, 21965560]

約数ペア:

[(1, 21965560), (2, 10982780), (4, 5491390), (5, 4393112), (8, 2745695), (10, 2196556), (20, 1098278), (40, 549139)]