71375240

素因数分解:

$2^3\times 5^1\times {\mathrm{1109}}^1\times {\mathrm{1609}}^1$

素因数の和:2729

約数の個数: 32

約数和(自身を含む): 160839000

約数和(自身を除く): 89463760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1109, 1609, 2218, 3218, 4436, 5545, 6436, 8045, 8872, 11090, 12872, 16090, 22180, 32180, 44360, 64360, 1784381, 3568762, 7137524, 8921905, 14275048, 17843810, 35687620, 71375240]

約数ペア:

[(1, 71375240), (2, 35687620), (4, 17843810), (5, 14275048), (8, 8921905), (10, 7137524), (20, 3568762), (40, 1784381), (1109, 64360), (1609, 44360), (2218, 32180), (3218, 22180), (4436, 16090), (5545, 12872), (6436, 11090), (8045, 8872)]