408039740

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{258253}}^1$

素因数の和:258341

約数の個数: 24

約数和(自身を含む): 867733440

約数和(自身を除く): 459693700

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 258253, 516506, 1033012, 1291265, 2582530, 5165060, 20401987, 40803974, 81607948, 102009935, 204019870, 408039740]

約数ペア:

[(1, 408039740), (2, 204019870), (4, 102009935), (5, 81607948), (10, 40803974), (20, 20401987), (79, 5165060), (158, 2582530), (316, 1291265), (395, 1033012), (790, 516506), (1580, 258253)]