1621220

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{787}}^1$

素因数の和:899

約数の個数: 24

約数和(自身を含む): 3441984

約数和(自身を除く): 1820764

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 787, 1030, 1574, 2060, 3148, 3935, 7870, 15740, 81061, 162122, 324244, 405305, 810610, 1621220]

約数ペア:

[(1, 1621220), (2, 810610), (4, 405305), (5, 324244), (10, 162122), (20, 81061), (103, 15740), (206, 7870), (412, 3935), (515, 3148), (787, 2060), (1030, 1574)]