20911160

素因数分解:

$2^3\times 5^1\times {\mathrm{139}}^1\times {\mathrm{3761}}^1$

素因数の和:3911

約数の個数: 32

約数和(自身を含む): 47401200

約数和(自身を除く): 26490040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 139, 278, 556, 695, 1112, 1390, 2780, 3761, 5560, 7522, 15044, 18805, 30088, 37610, 75220, 150440, 522779, 1045558, 2091116, 2613895, 4182232, 5227790, 10455580, 20911160]

約数ペア:

[(1, 20911160), (2, 10455580), (4, 5227790), (5, 4182232), (8, 2613895), (10, 2091116), (20, 1045558), (40, 522779), (139, 150440), (278, 75220), (556, 37610), (695, 30088), (1112, 18805), (1390, 15044), (2780, 7522), (3761, 5560)]