21211581

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1\times {\mathrm{1889}}^1$

素因数の和:2108

約数の個数: 16

約数和(自身を含む): 29937600

約数和(自身を除く): 8726019

約数列:

[1, 3, 19, 57, 197, 591, 1889, 3743, 5667, 11229, 35891, 107673, 372133, 1116399, 7070527, 21211581]

約数ペア:

[(1, 21211581), (3, 7070527), (19, 1116399), (57, 372133), (197, 107673), (591, 35891), (1889, 11229), (3743, 5667)]