21168836

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{7681}}^1$

素因数の和:7751

約数の個数: 24

約数和(自身を含む): 40653144

約数和(自身を除く): 19484308

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 1378, 2756, 7681, 15362, 30724, 99853, 199706, 399412, 407093, 814186, 1628372, 5292209, 10584418, 21168836]

約数ペア:

[(1, 21168836), (2, 10584418), (4, 5292209), (13, 1628372), (26, 814186), (52, 407093), (53, 399412), (106, 199706), (212, 99853), (689, 30724), (1378, 15362), (2756, 7681)]