81610840

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{12517}}^1$

素因数の和:12691

約数の個数: 32

約数和(自身を含む): 184765680

約数和(自身を除く): 103154840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 12517, 25034, 50068, 62585, 100136, 125170, 250340, 500680, 2040271, 4080542, 8161084, 10201355, 16322168, 20402710, 40805420, 81610840]

約数ペア:

[(1, 81610840), (2, 40805420), (4, 20402710), (5, 16322168), (8, 10201355), (10, 8161084), (20, 4080542), (40, 2040271), (163, 500680), (326, 250340), (652, 125170), (815, 100136), (1304, 62585), (1630, 50068), (3260, 25034), (6520, 12517)]