81715565

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{1571}}^1$

素因数の和:1780

約数の個数: 16

約数和(自身を含む): 100054656

約数和(自身を除く): 18339091

約数列:

[1, 5, 101, 103, 505, 515, 1571, 7855, 10403, 52015, 158671, 161813, 793355, 809065, 16343113, 81715565]

約数ペア:

[(1, 81715565), (5, 16343113), (101, 809065), (103, 793355), (505, 161813), (515, 158671), (1571, 52015), (7855, 10403)]