21972880

素因数分解:

$2^4\times 5^1\times {\mathrm{274661}}^1$

素因数の和:274674

約数の個数: 20

約数和(自身を含む): 51087132

約数和(自身を除く): 29114252

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 274661, 549322, 1098644, 1373305, 2197288, 2746610, 4394576, 5493220, 10986440, 21972880]

約数ペア:

[(1, 21972880), (2, 10986440), (4, 5493220), (5, 4394576), (8, 2746610), (10, 2197288), (16, 1373305), (20, 1098644), (40, 549322), (80, 274661)]