8720020

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{5519}}^1$

素因数の和:5607

約数の個数: 24

約数和(自身を含む): 18547200

約数和(自身を除く): 9827180

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 5519, 11038, 22076, 27595, 55190, 110380, 436001, 872002, 1744004, 2180005, 4360010, 8720020]

約数ペア:

[(1, 8720020), (2, 4360010), (4, 2180005), (5, 1744004), (10, 872002), (20, 436001), (79, 110380), (158, 55190), (316, 27595), (395, 22076), (790, 11038), (1580, 5519)]