81425440

素因数分解:

$2^5\times 5^1\times {\mathrm{508909}}^1$

素因数の和:508924

約数の個数: 24

約数和(自身を含む): 192367980

約数和(自身を除く): 110942540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 508909, 1017818, 2035636, 2544545, 4071272, 5089090, 8142544, 10178180, 16285088, 20356360, 40712720, 81425440]

約数ペア:

[(1, 81425440), (2, 40712720), (4, 20356360), (5, 16285088), (8, 10178180), (10, 8142544), (16, 5089090), (20, 4071272), (32, 2544545), (40, 2035636), (80, 1017818), (160, 508909)]