21787011075

素因数分解:

$3^1\times 5^2\times {\mathrm{290493481}}^1$

素因数の和:290493494

約数の個数: 12

約数和(自身を含む): 36021191768

約数和(自身を除く): 14234180693

約数列:

[1, 3, 5, 15, 25, 75, 290493481, 871480443, 1452467405, 4357402215, 7262337025, 21787011075]

約数ペア:

[(1, 21787011075), (3, 7262337025), (5, 4357402215), (15, 1452467405), (25, 871480443), (75, 290493481)]