20780397

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{2657}}^1$

素因数の和:2753

約数の個数: 24

約数和(自身を含む): 33171840

約数和(自身を除く): 12391443

約数列:

[1, 3, 9, 11, 33, 79, 99, 237, 711, 869, 2607, 2657, 7821, 7971, 23913, 29227, 87681, 209903, 263043, 629709, 1889127, 2308933, 6926799, 20780397]

約数ペア:

[(1, 20780397), (3, 6926799), (9, 2308933), (11, 1889127), (33, 629709), (79, 263043), (99, 209903), (237, 87681), (711, 29227), (869, 23913), (2607, 7971), (2657, 7821)]