21569840

素因数分解:

$2^4\times 5^1\times {\mathrm{269623}}^1$

素因数の和:269636

約数の個数: 20

約数和(自身を含む): 50150064

約数和(自身を除く): 28580224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269623, 539246, 1078492, 1348115, 2156984, 2696230, 4313968, 5392460, 10784920, 21569840]

約数ペア:

[(1, 21569840), (2, 10784920), (4, 5392460), (5, 4313968), (8, 2696230), (10, 2156984), (16, 1348115), (20, 1078492), (40, 539246), (80, 269623)]