20991027170

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{188311}}^1$

素因数の和:188546

約数の個数: 32

約数和(自身を含む): 38560271616

約数和(自身を除く): 17569244446

約数列:

[1, 2, 5, 10, 71, 142, 157, 314, 355, 710, 785, 1570, 11147, 22294, 55735, 111470, 188311, 376622, 941555, 1883110, 13370081, 26740162, 29564827, 59129654, 66850405, 133700810, 147824135, 295648270, 2099102717, 4198205434, 10495513585, 20991027170]

約数ペア:

[(1, 20991027170), (2, 10495513585), (5, 4198205434), (10, 2099102717), (71, 295648270), (142, 147824135), (157, 133700810), (314, 66850405), (355, 59129654), (710, 29564827), (785, 26740162), (1570, 13370081), (11147, 1883110), (22294, 941555), (55735, 376622), (111470, 188311)]