28054780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107903}}^1$

素因数の和:107925

約数の個数: 24

約数和(自身を含む): 63447552

約数和(自身を除く): 35392772

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 107903, 215806, 431612, 539515, 1079030, 1402739, 2158060, 2805478, 5610956, 7013695, 14027390, 28054780]

約数ペア:

[(1, 28054780), (2, 14027390), (4, 7013695), (5, 5610956), (10, 2805478), (13, 2158060), (20, 1402739), (26, 1079030), (52, 539515), (65, 431612), (130, 215806), (260, 107903)]