21272752

素因数分解:

$2^4\times {\mathrm{251}}^1\times {\mathrm{5297}}^1$

素因数の和:5556

約数の個数: 20

約数和(自身を含む): 41387976

約数和(自身を除く): 20115224

約数列:

[1, 2, 4, 8, 16, 251, 502, 1004, 2008, 4016, 5297, 10594, 21188, 42376, 84752, 1329547, 2659094, 5318188, 10636376, 21272752]

約数ペア:

[(1, 21272752), (2, 10636376), (4, 5318188), (8, 2659094), (16, 1329547), (251, 84752), (502, 42376), (1004, 21188), (2008, 10594), (4016, 5297)]