20970550

素因数分解:

$2^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{5309}}^1$

素因数の和:5400

約数の個数: 24

約数和(自身を含む): 39506400

約数和(自身を除く): 18535850

約数列:

[1, 2, 5, 10, 25, 50, 79, 158, 395, 790, 1975, 3950, 5309, 10618, 26545, 53090, 132725, 265450, 419411, 838822, 2097055, 4194110, 10485275, 20970550]

約数ペア:

[(1, 20970550), (2, 10485275), (5, 4194110), (10, 2097055), (25, 838822), (50, 419411), (79, 265450), (158, 132725), (395, 53090), (790, 26545), (1975, 10618), (3950, 5309)]