19661397

素因数分解:

$3^1\times 7^2\times {\mathrm{131}}^1\times {\mathrm{1021}}^1$

素因数の和:1169

約数の個数: 24

約数和(自身を含む): 30758112

約数和(自身を除く): 11096715

約数列:

[1, 3, 7, 21, 49, 131, 147, 393, 917, 1021, 2751, 3063, 6419, 7147, 19257, 21441, 50029, 133751, 150087, 401253, 936257, 2808771, 6553799, 19661397]

約数ペア:

[(1, 19661397), (3, 6553799), (7, 2808771), (21, 936257), (49, 401253), (131, 150087), (147, 133751), (393, 50029), (917, 21441), (1021, 19257), (2751, 7147), (3063, 6419)]