21781638

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^1\times {\mathrm{63689}}^1$

素因数の和:63716

約数の個数: 24

約数和(自身を含む): 49678200

約数和(自身を除く): 27896562

約数列:

[1, 2, 3, 6, 9, 18, 19, 38, 57, 114, 171, 342, 63689, 127378, 191067, 382134, 573201, 1146402, 1210091, 2420182, 3630273, 7260546, 10890819, 21781638]

約数ペア:

[(1, 21781638), (2, 10890819), (3, 7260546), (6, 3630273), (9, 2420182), (18, 1210091), (19, 1146402), (38, 573201), (57, 382134), (114, 191067), (171, 127378), (342, 63689)]