178912981

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{281}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 212623488

約数和(自身を除く): 33710507

約数列:

[1, 13, 17, 43, 67, 221, 281, 559, 731, 871, 1139, 2881, 3653, 4777, 9503, 12083, 14807, 18827, 37453, 48977, 62101, 157079, 205411, 244751, 320059, 636701, 809561, 2670343, 4160767, 10524293, 13762537, 178912981]

約数ペア:

[(1, 178912981), (13, 13762537), (17, 10524293), (43, 4160767), (67, 2670343), (221, 809561), (281, 636701), (559, 320059), (731, 244751), (871, 205411), (1139, 157079), (2881, 62101), (3653, 48977), (4777, 37453), (9503, 18827), (12083, 14807)]