2889640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{5557}}^1$

素因数の和:5581

約数の個数: 32

約数和(自身を含む): 7003080

約数和(自身を除く): 4113440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 5557, 11114, 22228, 27785, 44456, 55570, 72241, 111140, 144482, 222280, 288964, 361205, 577928, 722410, 1444820, 2889640]

約数ペア:

[(1, 2889640), (2, 1444820), (4, 722410), (5, 577928), (8, 361205), (10, 288964), (13, 222280), (20, 144482), (26, 111140), (40, 72241), (52, 55570), (65, 44456), (104, 27785), (130, 22228), (260, 11114), (520, 5557)]