2131725

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{661}}^1$

素因数の和:717

約数の個数: 24

約数和(自身を含む): 3611872

約数和(自身を除く): 1480147

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 661, 1075, 1983, 3225, 3305, 9915, 16525, 28423, 49575, 85269, 142115, 426345, 710575, 2131725]

約数ペア:

[(1, 2131725), (3, 710575), (5, 426345), (15, 142115), (25, 85269), (43, 49575), (75, 28423), (129, 16525), (215, 9915), (645, 3305), (661, 3225), (1075, 1983)]