28574780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109903}}^1$

素因数の和:109925

約数の個数: 24

約数和(自身を含む): 64623552

約数和(自身を除く): 36048772

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 109903, 219806, 439612, 549515, 1099030, 1428739, 2198060, 2857478, 5714956, 7143695, 14287390, 28574780]

約数ペア:

[(1, 28574780), (2, 14287390), (4, 7143695), (5, 5714956), (10, 2857478), (13, 2198060), (20, 1428739), (26, 1099030), (52, 549515), (65, 439612), (130, 219806), (260, 109903)]