287884820

素因数分解:

$2^2\times 5^1\times {\mathrm{1303}}^1\times {\mathrm{11047}}^1$

素因数の和:12359

約数の個数: 24

約数和(自身を含む): 605076864

約数和(自身を除く): 317192044

約数列:

[1, 2, 4, 5, 10, 20, 1303, 2606, 5212, 6515, 11047, 13030, 22094, 26060, 44188, 55235, 110470, 220940, 14394241, 28788482, 57576964, 71971205, 143942410, 287884820]

約数ペア:

[(1, 287884820), (2, 143942410), (4, 71971205), (5, 57576964), (10, 28788482), (20, 14394241), (1303, 220940), (2606, 110470), (5212, 55235), (6515, 44188), (11047, 26060), (13030, 22094)]