20687548

素因数分解:

$2^2\times 7^1\times {\mathrm{137}}^1\times {\mathrm{5393}}^1$

素因数の和:5541

約数の個数: 24

約数和(自身を含む): 41684832

約数和(自身を除く): 20997284

約数列:

[1, 2, 4, 7, 14, 28, 137, 274, 548, 959, 1918, 3836, 5393, 10786, 21572, 37751, 75502, 151004, 738841, 1477682, 2955364, 5171887, 10343774, 20687548]

約数ペア:

[(1, 20687548), (2, 10343774), (4, 5171887), (7, 2955364), (14, 1477682), (28, 738841), (137, 151004), (274, 75502), (548, 37751), (959, 21572), (1918, 10786), (3836, 5393)]