20395640

素因数分解:

$2^3\times 5^1\times {\mathrm{373}}^1\times {\mathrm{1367}}^1$

素因数の和:1751

約数の個数: 32

約数和(自身を含む): 46046880

約数和(自身を除く): 25651240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 373, 746, 1367, 1492, 1865, 2734, 2984, 3730, 5468, 6835, 7460, 10936, 13670, 14920, 27340, 54680, 509891, 1019782, 2039564, 2549455, 4079128, 5098910, 10197820, 20395640]

約数ペア:

[(1, 20395640), (2, 10197820), (4, 5098910), (5, 4079128), (8, 2549455), (10, 2039564), (20, 1019782), (40, 509891), (373, 54680), (746, 27340), (1367, 14920), (1492, 13670), (1865, 10936), (2734, 7460), (2984, 6835), (3730, 5468)]