78985720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2017}}^1$

素因数の和:2128

約数の個数: 64

約数和(自身を含む): 196149600

約数和(自身を除く): 117163880

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 89, 110, 178, 220, 356, 440, 445, 712, 890, 979, 1780, 1958, 2017, 3560, 3916, 4034, 4895, 7832, 8068, 9790, 10085, 16136, 19580, 20170, 22187, 39160, 40340, 44374, 80680, 88748, 110935, 177496, 179513, 221870, 359026, 443740, 718052, 887480, 897565, 1436104, 1795130, 1974643, 3590260, 3949286, 7180520, 7898572, 9873215, 15797144, 19746430, 39492860, 78985720]

約数ペア:

[(1, 78985720), (2, 39492860), (4, 19746430), (5, 15797144), (8, 9873215), (10, 7898572), (11, 7180520), (20, 3949286), (22, 3590260), (40, 1974643), (44, 1795130), (55, 1436104), (88, 897565), (89, 887480), (110, 718052), (178, 443740), (220, 359026), (356, 221870), (440, 179513), (445, 177496), (712, 110935), (890, 88748), (979, 80680), (1780, 44374), (1958, 40340), (2017, 39160), (3560, 22187), (3916, 20170), (4034, 19580), (4895, 16136), (7832, 10085), (8068, 9790)]