28017860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107761}}^1$

素因数の和:107783

約数の個数: 24

約数和(自身を含む): 63364056

約数和(自身を除く): 35346196

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 107761, 215522, 431044, 538805, 1077610, 1400893, 2155220, 2801786, 5603572, 7004465, 14008930, 28017860]

約数ペア:

[(1, 28017860), (2, 14008930), (4, 7004465), (5, 5603572), (10, 2801786), (13, 2155220), (20, 1400893), (26, 1077610), (52, 538805), (65, 431044), (130, 215522), (260, 107761)]