81611888

素因数分解:

$2^4\times {\mathrm{571}}^1\times {\mathrm{8933}}^1$

素因数の和:9512

約数の個数: 20

約数和(自身を含む): 158417688

約数和(自身を除く): 76805800

約数列:

[1, 2, 4, 8, 16, 571, 1142, 2284, 4568, 8933, 9136, 17866, 35732, 71464, 142928, 5100743, 10201486, 20402972, 40805944, 81611888]

約数ペア:

[(1, 81611888), (2, 40805944), (4, 20402972), (8, 10201486), (16, 5100743), (571, 142928), (1142, 71464), (2284, 35732), (4568, 17866), (8933, 9136)]