20893525

素因数分解:

$5^2\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1$

素因数の和:309

約数の個数: 24

約数和(自身を含む): 26784000

約数和(自身を除く): 5890475

約数列:

[1, 5, 25, 71, 79, 149, 355, 395, 745, 1775, 1975, 3725, 5609, 10579, 11771, 28045, 52895, 58855, 140225, 264475, 294275, 835741, 4178705, 20893525]

約数ペア:

[(1, 20893525), (5, 4178705), (25, 835741), (71, 294275), (79, 264475), (149, 140225), (355, 58855), (395, 52895), (745, 28045), (1775, 11771), (1975, 10579), (3725, 5609)]