81615856

素因数分解:

$2^4\times 7^1\times {\mathrm{728713}}^1$

素因数の和:728728

約数の個数: 20

約数和(自身を含む): 180721072

約数和(自身を除く): 99105216

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 728713, 1457426, 2914852, 5100991, 5829704, 10201982, 11659408, 20403964, 40807928, 81615856]

約数ペア:

[(1, 81615856), (2, 40807928), (4, 20403964), (7, 11659408), (8, 10201982), (14, 5829704), (16, 5100991), (28, 2914852), (56, 1457426), (112, 728713)]