20652970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2011}}^1$

素因数の和:2110

約数の個数: 32

約数和(自身を含む): 40561920

約数和(自身を除く): 19908950

約数列:

[1, 2, 5, 10, 13, 26, 65, 79, 130, 158, 395, 790, 1027, 2011, 2054, 4022, 5135, 10055, 10270, 20110, 26143, 52286, 130715, 158869, 261430, 317738, 794345, 1588690, 2065297, 4130594, 10326485, 20652970]

約数ペア:

[(1, 20652970), (2, 10326485), (5, 4130594), (10, 2065297), (13, 1588690), (26, 794345), (65, 317738), (79, 261430), (130, 158869), (158, 130715), (395, 52286), (790, 26143), (1027, 20110), (2011, 10270), (2054, 10055), (4022, 5135)]