661695225

素因数分解:

$3^1\times 5^2\times {\mathrm{643}}^1\times {\mathrm{13721}}^1$

素因数の和:14377

約数の個数: 24

約数和(自身を含む): 1095784032

約数和(自身を除く): 434088807

約数列:

[1, 3, 5, 15, 25, 75, 643, 1929, 3215, 9645, 13721, 16075, 41163, 48225, 68605, 205815, 343025, 1029075, 8822603, 26467809, 44113015, 132339045, 220565075, 661695225]

約数ペア:

[(1, 661695225), (3, 220565075), (5, 132339045), (15, 44113015), (25, 26467809), (75, 8822603), (643, 1029075), (1929, 343025), (3215, 205815), (9645, 68605), (13721, 48225), (16075, 41163)]