20528305

素因数分解:

$5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{3643}}^1$

素因数の和:3685

約数の個数: 24

約数和(自身を含む): 29909952

約数和(自身を除く): 9381647

約数列:

[1, 5, 7, 23, 35, 49, 115, 161, 245, 805, 1127, 3643, 5635, 18215, 25501, 83789, 127505, 178507, 418945, 586523, 892535, 2932615, 4105661, 20528305]

約数ペア:

[(1, 20528305), (5, 4105661), (7, 2932615), (23, 892535), (35, 586523), (49, 418945), (115, 178507), (161, 127505), (245, 83789), (805, 25501), (1127, 18215), (3643, 5635)]