28013260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{571}}^1$

素因数の和:814

約数の個数: 48

約数和(自身を含む): 64576512

約数和(自身を除く): 36563252

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 223, 446, 571, 892, 1115, 1142, 2230, 2284, 2453, 2855, 4460, 4906, 5710, 6281, 9812, 11420, 12265, 12562, 24530, 25124, 31405, 49060, 62810, 125620, 127333, 254666, 509332, 636665, 1273330, 1400663, 2546660, 2801326, 5602652, 7003315, 14006630, 28013260]

約数ペア:

[(1, 28013260), (2, 14006630), (4, 7003315), (5, 5602652), (10, 2801326), (11, 2546660), (20, 1400663), (22, 1273330), (44, 636665), (55, 509332), (110, 254666), (220, 127333), (223, 125620), (446, 62810), (571, 49060), (892, 31405), (1115, 25124), (1142, 24530), (2230, 12562), (2284, 12265), (2453, 11420), (2855, 9812), (4460, 6281), (4906, 5710)]