320428225

素因数分解:

$5^2\times {\mathrm{13}}^2\times {\mathrm{149}}^1\times {\mathrm{509}}^1$

素因数の和:694

約数の個数: 36

約数和(自身を含む): 433984500

約数和(自身を除く): 113556275

約数列:

[1, 5, 13, 25, 65, 149, 169, 325, 509, 745, 845, 1937, 2545, 3725, 4225, 6617, 9685, 12725, 25181, 33085, 48425, 75841, 86021, 125905, 165425, 379205, 430105, 629525, 985933, 1896025, 2150525, 4929665, 12817129, 24648325, 64085645, 320428225]

約数ペア:

[(1, 320428225), (5, 64085645), (13, 24648325), (25, 12817129), (65, 4929665), (149, 2150525), (169, 1896025), (325, 985933), (509, 629525), (745, 430105), (845, 379205), (1937, 165425), (2545, 125905), (3725, 86021), (4225, 75841), (6617, 48425), (9685, 33085), (12725, 25181)]