21784276

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{457}}^1\times {\mathrm{701}}^1$

素因数の和:1179

約数の個数: 24

約数和(自身を含む): 40511016

約数和(自身を除く): 18726740

約数列:

[1, 2, 4, 17, 34, 68, 457, 701, 914, 1402, 1828, 2804, 7769, 11917, 15538, 23834, 31076, 47668, 320357, 640714, 1281428, 5446069, 10892138, 21784276]

約数ペア:

[(1, 21784276), (2, 10892138), (4, 5446069), (17, 1281428), (34, 640714), (68, 320357), (457, 47668), (701, 31076), (914, 23834), (1402, 15538), (1828, 11917), (2804, 7769)]