81987004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{8831}}^1$

素因数の和:9057

約数の個数: 24

約数和(自身を含む): 157280256

約数和(自身を除く): 75293252

約数列:

[1, 2, 4, 11, 22, 44, 211, 422, 844, 2321, 4642, 8831, 9284, 17662, 35324, 97141, 194282, 388564, 1863341, 3726682, 7453364, 20496751, 40993502, 81987004]

約数ペア:

[(1, 81987004), (2, 40993502), (4, 20496751), (11, 7453364), (22, 3726682), (44, 1863341), (211, 388564), (422, 194282), (844, 97141), (2321, 35324), (4642, 17662), (8831, 9284)]