20161851740

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2081}}^1\times {\mathrm{5443}}^1$

素因数の和:7622

約数の個数: 48

約数和(自身を含む): 42844062240

約数和(自身を除く): 22682210500

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 2081, 4162, 5443, 8324, 10405, 10886, 20810, 21772, 27215, 41620, 54430, 108860, 185209, 370418, 484427, 740836, 926045, 968854, 1852090, 1937708, 2422135, 3704180, 4844270, 9688540, 11326883, 22653766, 45307532, 56634415, 113268830, 226537660, 1008092587, 2016185174, 4032370348, 5040462935, 10080925870, 20161851740]

約数ペア:

[(1, 20161851740), (2, 10080925870), (4, 5040462935), (5, 4032370348), (10, 2016185174), (20, 1008092587), (89, 226537660), (178, 113268830), (356, 56634415), (445, 45307532), (890, 22653766), (1780, 11326883), (2081, 9688540), (4162, 4844270), (5443, 3704180), (8324, 2422135), (10405, 1937708), (10886, 1852090), (20810, 968854), (21772, 926045), (27215, 740836), (41620, 484427), (54430, 370418), (108860, 185209)]