85405720

素因数分解:

$2^3\times 5^1\times {\mathrm{1327}}^1\times {\mathrm{1609}}^1$

素因数の和:2947

約数の個数: 32

約数和(自身を含む): 192427200

約数和(自身を除く): 107021480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1327, 1609, 2654, 3218, 5308, 6436, 6635, 8045, 10616, 12872, 13270, 16090, 26540, 32180, 53080, 64360, 2135143, 4270286, 8540572, 10675715, 17081144, 21351430, 42702860, 85405720]

約数ペア:

[(1, 85405720), (2, 42702860), (4, 21351430), (5, 17081144), (8, 10675715), (10, 8540572), (20, 4270286), (40, 2135143), (1327, 64360), (1609, 53080), (2654, 32180), (3218, 26540), (5308, 16090), (6436, 13270), (6635, 12872), (8045, 10616)]