21022825

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{107}}^1\times {\mathrm{271}}^1$

素因数の和:417

約数の個数: 24

約数和(自身を含む): 27319680

約数和(自身を除く): 6296855

約数列:

[1, 5, 25, 29, 107, 145, 271, 535, 725, 1355, 2675, 3103, 6775, 7859, 15515, 28997, 39295, 77575, 144985, 196475, 724925, 840913, 4204565, 21022825]

約数ペア:

[(1, 21022825), (5, 4204565), (25, 840913), (29, 724925), (107, 196475), (145, 144985), (271, 77575), (535, 39295), (725, 28997), (1355, 15515), (2675, 7859), (3103, 6775)]