19756985

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{211}}^1\times {\mathrm{307}}^1$

素因数の和:584

約数の個数: 16

約数和(自身を含む): 24290112

約数和(自身を除く): 4533127

約数列:

[1, 5, 61, 211, 305, 307, 1055, 1535, 12871, 18727, 64355, 64777, 93635, 323885, 3951397, 19756985]

約数ペア:

[(1, 19756985), (5, 3951397), (61, 323885), (211, 93635), (305, 64777), (307, 64355), (1055, 18727), (1535, 12871)]