28132780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108203}}^1$

素因数の和:108225

約数の個数: 24

約数和(自身を含む): 63623952

約数和(自身を除く): 35491172

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108203, 216406, 432812, 541015, 1082030, 1406639, 2164060, 2813278, 5626556, 7033195, 14066390, 28132780]

約数ペア:

[(1, 28132780), (2, 14066390), (4, 7033195), (5, 5626556), (10, 2813278), (13, 2164060), (20, 1406639), (26, 1082030), (52, 541015), (65, 432812), (130, 216406), (260, 108203)]