20215880

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{3347}}^1$

素因数の和:3509

約数の個数: 32

約数和(自身を含む): 45800640

約数和(自身を除く): 25584760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 3347, 6040, 6694, 13388, 16735, 26776, 33470, 66940, 133880, 505397, 1010794, 2021588, 2526985, 4043176, 5053970, 10107940, 20215880]

約数ペア:

[(1, 20215880), (2, 10107940), (4, 5053970), (5, 4043176), (8, 2526985), (10, 2021588), (20, 1010794), (40, 505397), (151, 133880), (302, 66940), (604, 33470), (755, 26776), (1208, 16735), (1510, 13388), (3020, 6694), (3347, 6040)]