20900425

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{9187}}^1$

素因数の和:9217

約数の個数: 24

約数和(自身を含む): 31900736

約数和(自身を除く): 11000311

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 9187, 45935, 64309, 119431, 229675, 321545, 597155, 836017, 1607725, 2985775, 4180085, 20900425]

約数ペア:

[(1, 20900425), (5, 4180085), (7, 2985775), (13, 1607725), (25, 836017), (35, 597155), (65, 321545), (91, 229675), (175, 119431), (325, 64309), (455, 45935), (2275, 9187)]