81691985

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{383}}^1\times {\mathrm{1471}}^1$

素因数の和:1888

約数の個数: 16

約数和(自身を含む): 101744640

約数和(自身を除く): 20052655

約数列:

[1, 5, 29, 145, 383, 1471, 1915, 7355, 11107, 42659, 55535, 213295, 563393, 2816965, 16338397, 81691985]

約数ペア:

[(1, 81691985), (5, 16338397), (29, 2816965), (145, 563393), (383, 213295), (1471, 55535), (1915, 42659), (7355, 11107)]