20488975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2741}}^1$

素因数の和:2787

約数の個数: 24

約数和(自身を含む): 28560672

約数和(自身を除く): 8071697

約数列:

[1, 5, 13, 23, 25, 65, 115, 299, 325, 575, 1495, 2741, 7475, 13705, 35633, 63043, 68525, 178165, 315215, 819559, 890825, 1576075, 4097795, 20488975]

約数ペア:

[(1, 20488975), (5, 4097795), (13, 1576075), (23, 890825), (25, 819559), (65, 315215), (115, 178165), (299, 68525), (325, 63043), (575, 35633), (1495, 13705), (2741, 7475)]