218971593

素因数分解:

$3^4\times {\mathrm{151}}^1\times {\mathrm{17903}}^1$

素因数の和:18066

約数の個数: 20

約数和(自身を含む): 329290368

約数和(自身を除く): 110318775

約数列:

[1, 3, 9, 27, 81, 151, 453, 1359, 4077, 12231, 17903, 53709, 161127, 483381, 1450143, 2703353, 8110059, 24330177, 72990531, 218971593]

約数ペア:

[(1, 218971593), (3, 72990531), (9, 24330177), (27, 8110059), (81, 2703353), (151, 1450143), (453, 483381), (1359, 161127), (4077, 53709), (12231, 17903)]