21089560

素因数分解:

$2^3\times 5^1\times {\mathrm{439}}^1\times {\mathrm{1201}}^1$

素因数の和:1651

約数の個数: 32

約数和(自身を含む): 47599200

約数和(自身を除く): 26509640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 439, 878, 1201, 1756, 2195, 2402, 3512, 4390, 4804, 6005, 8780, 9608, 12010, 17560, 24020, 48040, 527239, 1054478, 2108956, 2636195, 4217912, 5272390, 10544780, 21089560]

約数ペア:

[(1, 21089560), (2, 10544780), (4, 5272390), (5, 4217912), (8, 2636195), (10, 2108956), (20, 1054478), (40, 527239), (439, 48040), (878, 24020), (1201, 17560), (1756, 12010), (2195, 9608), (2402, 8780), (3512, 6005), (4390, 4804)]