81140900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{10271}}^1$

素因数の和:10364

約数の個数: 36

約数和(自身を含む): 178321920

約数和(自身を除く): 97181020

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 3950, 7900, 10271, 20542, 41084, 51355, 102710, 205420, 256775, 513550, 811409, 1027100, 1622818, 3245636, 4057045, 8114090, 16228180, 20285225, 40570450, 81140900]

約数ペア:

[(1, 81140900), (2, 40570450), (4, 20285225), (5, 16228180), (10, 8114090), (20, 4057045), (25, 3245636), (50, 1622818), (79, 1027100), (100, 811409), (158, 513550), (316, 256775), (395, 205420), (790, 102710), (1580, 51355), (1975, 41084), (3950, 20542), (7900, 10271)]