28228720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27143}}^1$

素因数の和:27169

約数の個数: 40

約数和(自身を含む): 70682976

約数和(自身を除く): 42454256

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27143, 54286, 108572, 135715, 217144, 271430, 352859, 434288, 542860, 705718, 1085720, 1411436, 1764295, 2171440, 2822872, 3528590, 5645744, 7057180, 14114360, 28228720]

約数ペア:

[(1, 28228720), (2, 14114360), (4, 7057180), (5, 5645744), (8, 3528590), (10, 2822872), (13, 2171440), (16, 1764295), (20, 1411436), (26, 1085720), (40, 705718), (52, 542860), (65, 434288), (80, 352859), (104, 271430), (130, 217144), (208, 135715), (260, 108572), (520, 54286), (1040, 27143)]