28908400

素因数分解:

$2^4\times 5^2\times {\mathrm{72271}}^1$

素因数の和:72289

約数の個数: 30

約数和(自身を含む): 69453392

約数和(自身を除く): 40544992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 72271, 144542, 289084, 361355, 578168, 722710, 1156336, 1445420, 1806775, 2890840, 3613550, 5781680, 7227100, 14454200, 28908400]

約数ペア:

[(1, 28908400), (2, 14454200), (4, 7227100), (5, 5781680), (8, 3613550), (10, 2890840), (16, 1806775), (20, 1445420), (25, 1156336), (40, 722710), (50, 578168), (80, 361355), (100, 289084), (200, 144542), (400, 72271)]