28896400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{5557}}^1$

素因数の和:5588

約数の個数: 60

約数和(自身を含む): 74777332

約数和(自身を除く): 45880932

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 5200, 5557, 11114, 22228, 27785, 44456, 55570, 72241, 88912, 111140, 138925, 144482, 222280, 277850, 288964, 361205, 444560, 555700, 577928, 722410, 1111400, 1155856, 1444820, 1806025, 2222800, 2889640, 3612050, 5779280, 7224100, 14448200, 28896400]

約数ペア:

[(1, 28896400), (2, 14448200), (4, 7224100), (5, 5779280), (8, 3612050), (10, 2889640), (13, 2222800), (16, 1806025), (20, 1444820), (25, 1155856), (26, 1111400), (40, 722410), (50, 577928), (52, 555700), (65, 444560), (80, 361205), (100, 288964), (104, 277850), (130, 222280), (200, 144482), (208, 138925), (260, 111140), (325, 88912), (400, 72241), (520, 55570), (650, 44456), (1040, 27785), (1300, 22228), (2600, 11114), (5200, 5557)]