25920800

素因数分解:

$2^5\times 5^2\times {\mathrm{32401}}^1$

素因数の和:32421

約数の個数: 36

約数和(自身を含む): 63281106

約数和(自身を除く): 37360306

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 32401, 64802, 129604, 162005, 259208, 324010, 518416, 648020, 810025, 1036832, 1296040, 1620050, 2592080, 3240100, 5184160, 6480200, 12960400, 25920800]

約数ペア:

[(1, 25920800), (2, 12960400), (4, 6480200), (5, 5184160), (8, 3240100), (10, 2592080), (16, 1620050), (20, 1296040), (25, 1036832), (32, 810025), (40, 648020), (50, 518416), (80, 324010), (100, 259208), (160, 162005), (200, 129604), (400, 64802), (800, 32401)]