21728950

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{5501}}^1$

素因数の和:5592

約数の個数: 24

約数和(自身を含む): 40934880

約数和(自身を除く): 19205930

約数列:

[1, 2, 5, 10, 25, 50, 79, 158, 395, 790, 1975, 3950, 5501, 11002, 27505, 55010, 137525, 275050, 434579, 869158, 2172895, 4345790, 10864475, 21728950]

約数ペア:

[(1, 21728950), (2, 10864475), (5, 4345790), (10, 2172895), (25, 869158), (50, 434579), (79, 275050), (158, 137525), (395, 55010), (790, 27505), (1975, 11002), (3950, 5501)]