20156825

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{569}}^1$

素因数の和:701

約数の個数: 24

約数和(自身を含む): 27211800

約数和(自身を除く): 7054975

約数列:

[1, 5, 13, 25, 65, 109, 325, 545, 569, 1417, 2725, 2845, 7085, 7397, 14225, 35425, 36985, 62021, 184925, 310105, 806273, 1550525, 4031365, 20156825]

約数ペア:

[(1, 20156825), (5, 4031365), (13, 1550525), (25, 806273), (65, 310105), (109, 184925), (325, 62021), (545, 36985), (569, 35425), (1417, 14225), (2725, 7397), (2845, 7085)]