4261780

素因数分解:

$2^2\times 5^1\times {\mathrm{409}}^1\times {\mathrm{521}}^1$

素因数の和:939

約数の個数: 24

約数和(自身を含む): 8988840

約数和(自身を除く): 4727060

約数列:

[1, 2, 4, 5, 10, 20, 409, 521, 818, 1042, 1636, 2045, 2084, 2605, 4090, 5210, 8180, 10420, 213089, 426178, 852356, 1065445, 2130890, 4261780]

約数ペア:

[(1, 4261780), (2, 2130890), (4, 1065445), (5, 852356), (10, 426178), (20, 213089), (409, 10420), (521, 8180), (818, 5210), (1042, 4090), (1636, 2605), (2045, 2084)]