28744400

素因数分解:

$2^4\times 5^2\times {\mathrm{71861}}^1$

素因数の和:71879

約数の個数: 30

約数和(自身を含む): 69059382

約数和(自身を除く): 40314982

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 71861, 143722, 287444, 359305, 574888, 718610, 1149776, 1437220, 1796525, 2874440, 3593050, 5748880, 7186100, 14372200, 28744400]

約数ペア:

[(1, 28744400), (2, 14372200), (4, 7186100), (5, 5748880), (8, 3593050), (10, 2874440), (16, 1796525), (20, 1437220), (25, 1149776), (40, 718610), (50, 574888), (80, 359305), (100, 287444), (200, 143722), (400, 71861)]