81403352

素因数分解:

$2^3\times {\mathrm{509}}^1\times {\mathrm{19991}}^1$

素因数の和:20506

約数の個数: 16

約数和(自身を含む): 152938800

約数和(自身を除く): 71535448

約数列:

[1, 2, 4, 8, 509, 1018, 2036, 4072, 19991, 39982, 79964, 159928, 10175419, 20350838, 40701676, 81403352]

約数ペア:

[(1, 81403352), (2, 40701676), (4, 20350838), (8, 10175419), (509, 159928), (1018, 79964), (2036, 39982), (4072, 19991)]