21922900

素因数分解:

$2^2\times 5^2\times {\mathrm{211}}^1\times {\mathrm{1039}}^1$

素因数の和:1264

約数の個数: 36

約数和(自身を含む): 47844160

約数和(自身を除く): 25921260

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 211, 422, 844, 1039, 1055, 2078, 2110, 4156, 4220, 5195, 5275, 10390, 10550, 20780, 21100, 25975, 51950, 103900, 219229, 438458, 876916, 1096145, 2192290, 4384580, 5480725, 10961450, 21922900]

約数ペア:

[(1, 21922900), (2, 10961450), (4, 5480725), (5, 4384580), (10, 2192290), (20, 1096145), (25, 876916), (50, 438458), (100, 219229), (211, 103900), (422, 51950), (844, 25975), (1039, 21100), (1055, 20780), (2078, 10550), (2110, 10390), (4156, 5275), (4220, 5195)]