85165720

素因数分解:

$2^3\times 5^1\times {\mathrm{131}}^1\times {\mathrm{16253}}^1$

素因数の和:16395

約数の個数: 32

約数和(自身を含む): 193097520

約数和(自身を除く): 107931800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 131, 262, 524, 655, 1048, 1310, 2620, 5240, 16253, 32506, 65012, 81265, 130024, 162530, 325060, 650120, 2129143, 4258286, 8516572, 10645715, 17033144, 21291430, 42582860, 85165720]

約数ペア:

[(1, 85165720), (2, 42582860), (4, 21291430), (5, 17033144), (8, 10645715), (10, 8516572), (20, 4258286), (40, 2129143), (131, 650120), (262, 325060), (524, 162530), (655, 130024), (1048, 81265), (1310, 65012), (2620, 32506), (5240, 16253)]