662020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{419}}^1$

素因数の和:507

約数の個数: 24

約数和(自身を含む): 1411200

約数和(自身を除く): 749180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 419, 790, 838, 1580, 1676, 2095, 4190, 8380, 33101, 66202, 132404, 165505, 331010, 662020]

約数ペア:

[(1, 662020), (2, 331010), (4, 165505), (5, 132404), (10, 66202), (20, 33101), (79, 8380), (158, 4190), (316, 2095), (395, 1676), (419, 1580), (790, 838)]