21493575

素因数分解:

$3^2\times 5^2\times {\mathrm{95527}}^1$

素因数の和:95543

約数の個数: 18

約数和(自身を含む): 38497784

約数和(自身を除く): 17004209

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 225, 95527, 286581, 477635, 859743, 1432905, 2388175, 4298715, 7164525, 21493575]

約数ペア:

[(1, 21493575), (3, 7164525), (5, 4298715), (9, 2388175), (15, 1432905), (25, 859743), (45, 477635), (75, 286581), (225, 95527)]