28041640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{631}}^1$

素因数の和:754

約数の個数: 64

約数和(自身を含む): 69621120

約数和(自身を除く): 41579480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 404, 440, 505, 631, 808, 1010, 1111, 1262, 2020, 2222, 2524, 3155, 4040, 4444, 5048, 5555, 6310, 6941, 8888, 11110, 12620, 13882, 22220, 25240, 27764, 34705, 44440, 55528, 63731, 69410, 127462, 138820, 254924, 277640, 318655, 509848, 637310, 701041, 1274620, 1402082, 2549240, 2804164, 3505205, 5608328, 7010410, 14020820, 28041640]

約数ペア:

[(1, 28041640), (2, 14020820), (4, 7010410), (5, 5608328), (8, 3505205), (10, 2804164), (11, 2549240), (20, 1402082), (22, 1274620), (40, 701041), (44, 637310), (55, 509848), (88, 318655), (101, 277640), (110, 254924), (202, 138820), (220, 127462), (404, 69410), (440, 63731), (505, 55528), (631, 44440), (808, 34705), (1010, 27764), (1111, 25240), (1262, 22220), (2020, 13882), (2222, 12620), (2524, 11110), (3155, 8888), (4040, 6941), (4444, 6310), (5048, 5555)]