1661755

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{151}}^1$

素因数の和:258

約数の個数: 16

約数和(自身を含む): 2101248

約数和(自身を除く): 439493

約数列:

[1, 5, 31, 71, 151, 155, 355, 755, 2201, 4681, 10721, 11005, 23405, 53605, 332351, 1661755]

約数ペア:

[(1, 1661755), (5, 332351), (31, 53605), (71, 23405), (151, 11005), (155, 10721), (355, 4681), (755, 2201)]