1680225

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{521}}^1$

素因数の和:577

約数の個数: 24

約数和(自身を含む): 2848032

約数和(自身を除く): 1167807

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 521, 645, 1075, 1563, 2605, 3225, 7815, 13025, 22403, 39075, 67209, 112015, 336045, 560075, 1680225]

約数ペア:

[(1, 1680225), (3, 560075), (5, 336045), (15, 112015), (25, 67209), (43, 39075), (75, 22403), (129, 13025), (215, 7815), (521, 3225), (645, 2605), (1075, 1563)]