19940319

素因数分解:

$3^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{2801}}^1$

素因数の和:2927

約数の個数: 24

約数和(自身を含む): 33220512

約数和(自身を除く): 13280193

約数列:

[1, 3, 7, 9, 21, 63, 113, 339, 791, 1017, 2373, 2801, 7119, 8403, 19607, 25209, 58821, 176463, 316513, 949539, 2215591, 2848617, 6646773, 19940319]

約数ペア:

[(1, 19940319), (3, 6646773), (7, 2848617), (9, 2215591), (21, 949539), (63, 316513), (113, 176463), (339, 58821), (791, 25209), (1017, 19607), (2373, 8403), (2801, 7119)]