20782007180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{917123}}^1$

素因数の和:917246

約数の個数: 48

約数和(自身を含む): 48071971584

約数和(自身を除く): 27289964404

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 103, 110, 206, 220, 412, 515, 1030, 1133, 2060, 2266, 4532, 5665, 11330, 22660, 917123, 1834246, 3668492, 4585615, 9171230, 10088353, 18342460, 20176706, 40353412, 50441765, 94463669, 100883530, 188927338, 201767060, 377854676, 472318345, 944636690, 1039100359, 1889273380, 2078200718, 4156401436, 5195501795, 10391003590, 20782007180]

約数ペア:

[(1, 20782007180), (2, 10391003590), (4, 5195501795), (5, 4156401436), (10, 2078200718), (11, 1889273380), (20, 1039100359), (22, 944636690), (44, 472318345), (55, 377854676), (103, 201767060), (110, 188927338), (206, 100883530), (220, 94463669), (412, 50441765), (515, 40353412), (1030, 20176706), (1133, 18342460), (2060, 10088353), (2266, 9171230), (4532, 4585615), (5665, 3668492), (11330, 1834246), (22660, 917123)]