21700510

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2113}}^1$

素因数の和:2212

約数の個数: 32

約数和(自身を含む): 42618240

約数和(自身を除く): 20917730

約数列:

[1, 2, 5, 10, 13, 26, 65, 79, 130, 158, 395, 790, 1027, 2054, 2113, 4226, 5135, 10270, 10565, 21130, 27469, 54938, 137345, 166927, 274690, 333854, 834635, 1669270, 2170051, 4340102, 10850255, 21700510]

約数ペア:

[(1, 21700510), (2, 10850255), (5, 4340102), (10, 2170051), (13, 1669270), (26, 834635), (65, 333854), (79, 274690), (130, 166927), (158, 137345), (395, 54938), (790, 27469), (1027, 21130), (2054, 10565), (2113, 10270), (4226, 5135)]