81406328

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{251}}^1\times {\mathrm{571}}^1$

素因数の和:899

約数の個数: 32

約数和(自身を含む): 155675520

約数和(自身を除く): 74269192

約数列:

[1, 2, 4, 8, 71, 142, 251, 284, 502, 568, 571, 1004, 1142, 2008, 2284, 4568, 17821, 35642, 40541, 71284, 81082, 142568, 143321, 162164, 286642, 324328, 573284, 1146568, 10175791, 20351582, 40703164, 81406328]

約数ペア:

[(1, 81406328), (2, 40703164), (4, 20351582), (8, 10175791), (71, 1146568), (142, 573284), (251, 324328), (284, 286642), (502, 162164), (568, 143321), (571, 142568), (1004, 81082), (1142, 71284), (2008, 40541), (2284, 35642), (4568, 17821)]