21375990

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{2179}}^1$

素因数の和:2301

約数の個数: 48

約数和(自身を含む): 56113200

約数和(自身を除く): 34737210

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 109, 218, 327, 545, 654, 981, 1090, 1635, 1962, 2179, 3270, 4358, 4905, 6537, 9810, 10895, 13074, 19611, 21790, 32685, 39222, 65370, 98055, 196110, 237511, 475022, 712533, 1187555, 1425066, 2137599, 2375110, 3562665, 4275198, 7125330, 10687995, 21375990]

約数ペア:

[(1, 21375990), (2, 10687995), (3, 7125330), (5, 4275198), (6, 3562665), (9, 2375110), (10, 2137599), (15, 1425066), (18, 1187555), (30, 712533), (45, 475022), (90, 237511), (109, 196110), (218, 98055), (327, 65370), (545, 39222), (654, 32685), (981, 21790), (1090, 19611), (1635, 13074), (1962, 10895), (2179, 9810), (3270, 6537), (4358, 4905)]