19138371

素因数分解:

$3^1\times 7^4\times {\mathrm{2657}}^1$

素因数の和:2688

約数の個数: 20

約数和(自身を含む): 29780232

約数和(自身を除く): 10641861

約数列:

[1, 3, 7, 21, 49, 147, 343, 1029, 2401, 2657, 7203, 7971, 18599, 55797, 130193, 390579, 911351, 2734053, 6379457, 19138371]

約数ペア:

[(1, 19138371), (3, 6379457), (7, 2734053), (21, 911351), (49, 390579), (147, 130193), (343, 55797), (1029, 18599), (2401, 7971), (2657, 7203)]