21490525

素因数分解:

$5^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3319}}^1$

素因数の和:3373

約数の個数: 24

約数和(自身を含む): 31287680

約数和(自身を除く): 9797155

約数列:

[1, 5, 7, 25, 35, 37, 175, 185, 259, 925, 1295, 3319, 6475, 16595, 23233, 82975, 116165, 122803, 580825, 614015, 859621, 3070075, 4298105, 21490525]

約数ペア:

[(1, 21490525), (5, 4298105), (7, 3070075), (25, 859621), (35, 614015), (37, 580825), (175, 122803), (185, 116165), (259, 82975), (925, 23233), (1295, 16595), (3319, 6475)]