21961040

素因数分解:

$2^4\times 5^1\times {\mathrm{223}}^1\times {\mathrm{1231}}^1$

素因数の和:1467

約数の個数: 40

約数和(自身を含む): 51330048

約数和(自身を除く): 29369008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 223, 446, 892, 1115, 1231, 1784, 2230, 2462, 3568, 4460, 4924, 6155, 8920, 9848, 12310, 17840, 19696, 24620, 49240, 98480, 274513, 549026, 1098052, 1372565, 2196104, 2745130, 4392208, 5490260, 10980520, 21961040]

約数ペア:

[(1, 21961040), (2, 10980520), (4, 5490260), (5, 4392208), (8, 2745130), (10, 2196104), (16, 1372565), (20, 1098052), (40, 549026), (80, 274513), (223, 98480), (446, 49240), (892, 24620), (1115, 19696), (1231, 17840), (1784, 12310), (2230, 9848), (2462, 8920), (3568, 6155), (4460, 4924)]