19879797

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{521}}^1$

素因数の和:633

約数の個数: 32

約数和(自身を含む): 32071680

約数和(自身を除く): 12191883

約数列:

[1, 3, 7, 21, 23, 69, 79, 161, 237, 483, 521, 553, 1563, 1659, 1817, 3647, 5451, 10941, 11983, 12719, 35949, 38157, 41159, 83881, 123477, 251643, 288113, 864339, 946657, 2839971, 6626599, 19879797]

約数ペア:

[(1, 19879797), (3, 6626599), (7, 2839971), (21, 946657), (23, 864339), (69, 288113), (79, 251643), (161, 123477), (237, 83881), (483, 41159), (521, 38157), (553, 35949), (1563, 12719), (1659, 11983), (1817, 10941), (3647, 5451)]