18839480

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{911}}^1$

素因数の和:980

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 28438600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 47, 55, 88, 94, 110, 188, 220, 235, 376, 440, 470, 517, 911, 940, 1034, 1822, 1880, 2068, 2585, 3644, 4136, 4555, 5170, 7288, 9110, 10021, 10340, 18220, 20042, 20680, 36440, 40084, 42817, 50105, 80168, 85634, 100210, 171268, 200420, 214085, 342536, 400840, 428170, 470987, 856340, 941974, 1712680, 1883948, 2354935, 3767896, 4709870, 9419740, 18839480]

約数ペア:

[(1, 18839480), (2, 9419740), (4, 4709870), (5, 3767896), (8, 2354935), (10, 1883948), (11, 1712680), (20, 941974), (22, 856340), (40, 470987), (44, 428170), (47, 400840), (55, 342536), (88, 214085), (94, 200420), (110, 171268), (188, 100210), (220, 85634), (235, 80168), (376, 50105), (440, 42817), (470, 40084), (517, 36440), (911, 20680), (940, 20042), (1034, 18220), (1822, 10340), (1880, 10021), (2068, 9110), (2585, 7288), (3644, 5170), (4136, 4555)]