28115620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{6361}}^1$

素因数の和:6400

約数の個数: 48

約数和(自身を含む): 67335408

約数和(自身を除く): 39219788

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 170, 221, 260, 340, 442, 884, 1105, 2210, 4420, 6361, 12722, 25444, 31805, 63610, 82693, 108137, 127220, 165386, 216274, 330772, 413465, 432548, 540685, 826930, 1081370, 1405781, 1653860, 2162740, 2811562, 5623124, 7028905, 14057810, 28115620]

約数ペア:

[(1, 28115620), (2, 14057810), (4, 7028905), (5, 5623124), (10, 2811562), (13, 2162740), (17, 1653860), (20, 1405781), (26, 1081370), (34, 826930), (52, 540685), (65, 432548), (68, 413465), (85, 330772), (130, 216274), (170, 165386), (221, 127220), (260, 108137), (340, 82693), (442, 63610), (884, 31805), (1105, 25444), (2210, 12722), (4420, 6361)]