40805420

素因数分解:

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

素因数の和:12689

約数の個数: 24

約数和(自身を含む): 86223984

約数和(自身を除く): 45418564

約数列:

[1, 2, 4, 5, 10, 20, 163, 326, 652, 815, 1630, 3260, 12517, 25034, 50068, 62585, 125170, 250340, 2040271, 4080542, 8161084, 10201355, 20402710, 40805420]

約数ペア:

[(1, 40805420), (2, 20402710), (4, 10201355), (5, 8161084), (10, 4080542), (20, 2040271), (163, 250340), (326, 125170), (652, 62585), (815, 50068), (1630, 25034), (3260, 12517)]