10720400

素因数分解:

$2^4\times 5^2\times {\mathrm{26801}}^1$

素因数の和:26819

約数の個数: 30

約数和(自身を含む): 25756722

約数和(自身を除く): 15036322

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 26801, 53602, 107204, 134005, 214408, 268010, 428816, 536020, 670025, 1072040, 1340050, 2144080, 2680100, 5360200, 10720400]

約数ペア:

[(1, 10720400), (2, 5360200), (4, 2680100), (5, 2144080), (8, 1340050), (10, 1072040), (16, 670025), (20, 536020), (25, 428816), (40, 268010), (50, 214408), (80, 134005), (100, 107204), (200, 53602), (400, 26801)]