68680505

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{307}}^1\times {\mathrm{443}}^1$

素因数の和:856

約数の個数: 16

約数和(自身を含む): 83692224

約数和(自身を除く): 15011719

約数列:

[1, 5, 101, 307, 443, 505, 1535, 2215, 31007, 44743, 136001, 155035, 223715, 680005, 13736101, 68680505]

約数ペア:

[(1, 68680505), (5, 13736101), (101, 680005), (307, 223715), (443, 155035), (505, 136001), (1535, 44743), (2215, 31007)]