890044420

素因数分解:

$2^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{210911}}^1$

素因数の和:211131

約数の個数: 24

約数和(自身を含む): 1877960448

約数和(自身を除く): 987916028

約数列:

[1, 2, 4, 5, 10, 20, 211, 422, 844, 1055, 2110, 4220, 210911, 421822, 843644, 1054555, 2109110, 4218220, 44502221, 89004442, 178008884, 222511105, 445022210, 890044420]

約数ペア:

[(1, 890044420), (2, 445022210), (4, 222511105), (5, 178008884), (10, 89004442), (20, 44502221), (211, 4218220), (422, 2109110), (844, 1054555), (1055, 843644), (2110, 421822), (4220, 210911)]