19781372

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{2423}}^1$

素因数の和:2597

約数の個数: 24

約数和(自身を含む): 37533216

約数和(自身を除く): 17751844

約数列:

[1, 2, 4, 13, 26, 52, 157, 314, 628, 2041, 2423, 4082, 4846, 8164, 9692, 31499, 62998, 125996, 380411, 760822, 1521644, 4945343, 9890686, 19781372]

約数ペア:

[(1, 19781372), (2, 9890686), (4, 4945343), (13, 1521644), (26, 760822), (52, 380411), (157, 125996), (314, 62998), (628, 31499), (2041, 9692), (2423, 8164), (4082, 4846)]