20120548

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{349}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 42336000

約数和(自身を除く): 22215452

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 71, 116, 142, 203, 284, 349, 406, 497, 698, 812, 994, 1396, 1988, 2059, 2443, 4118, 4886, 8236, 9772, 10121, 14413, 20242, 24779, 28826, 40484, 49558, 57652, 70847, 99116, 141694, 173453, 283388, 346906, 693812, 718591, 1437182, 2874364, 5030137, 10060274, 20120548]

約数ペア:

[(1, 20120548), (2, 10060274), (4, 5030137), (7, 2874364), (14, 1437182), (28, 718591), (29, 693812), (58, 346906), (71, 283388), (116, 173453), (142, 141694), (203, 99116), (284, 70847), (349, 57652), (406, 49558), (497, 40484), (698, 28826), (812, 24779), (994, 20242), (1396, 14413), (1988, 10121), (2059, 9772), (2443, 8236), (4118, 4886)]