21000643220

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{10194487}}^1$

素因数の和:10194599

約数の個数: 24

約数和(自身を含む): 44529523584

約数和(自身を除く): 23528880364

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 10194487, 20388974, 40777948, 50972435, 101944870, 203889740, 1050032161, 2100064322, 4200128644, 5250160805, 10500321610, 21000643220]

約数ペア:

[(1, 21000643220), (2, 10500321610), (4, 5250160805), (5, 4200128644), (10, 2100064322), (20, 1050032161), (103, 203889740), (206, 101944870), (412, 50972435), (515, 40777948), (1030, 20388974), (2060, 10194487)]