21261260

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{10321}}^1$

素因数の和:10433

約数の個数: 24

約数和(自身を含む): 45086496

約数和(自身を除く): 23825236

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 10321, 20642, 41284, 51605, 103210, 206420, 1063063, 2126126, 4252252, 5315315, 10630630, 21261260]

約数ペア:

[(1, 21261260), (2, 10630630), (4, 5315315), (5, 4252252), (10, 2126126), (20, 1063063), (103, 206420), (206, 103210), (412, 51605), (515, 41284), (1030, 20642), (2060, 10321)]