19910722

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{14449}}^1$

素因数の和:14517

約数の個数: 16

約数和(自身を含む): 32772600

約数和(自身を除く): 12861878

約数列:

[1, 2, 13, 26, 53, 106, 689, 1378, 14449, 28898, 187837, 375674, 765797, 1531594, 9955361, 19910722]

約数ペア:

[(1, 19910722), (2, 9955361), (13, 1531594), (26, 765797), (53, 375674), (106, 187837), (689, 28898), (1378, 14449)]