21105475

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{677}}^1$

素因数の和:759

約数の個数: 24

約数和(自身を含む): 27743760

約数和(自身を除く): 6638285

約数列:

[1, 5, 25, 29, 43, 145, 215, 677, 725, 1075, 1247, 3385, 6235, 16925, 19633, 29111, 31175, 98165, 145555, 490825, 727775, 844219, 4221095, 21105475]

約数ペア:

[(1, 21105475), (5, 4221095), (25, 844219), (29, 727775), (43, 490825), (145, 145555), (215, 98165), (677, 31175), (725, 29111), (1075, 19633), (1247, 16925), (3385, 6235)]