20339440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{797}}^1$

素因数の和:850

約数の個数: 80

約数和(自身を含む): 53434080

約数和(自身を除く): 33094640

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 40, 44, 55, 58, 80, 88, 110, 116, 145, 176, 220, 232, 290, 319, 440, 464, 580, 638, 797, 880, 1160, 1276, 1594, 1595, 2320, 2552, 3188, 3190, 3985, 5104, 6376, 6380, 7970, 8767, 12752, 12760, 15940, 17534, 23113, 25520, 31880, 35068, 43835, 46226, 63760, 70136, 87670, 92452, 115565, 140272, 175340, 184904, 231130, 254243, 350680, 369808, 462260, 508486, 701360, 924520, 1016972, 1271215, 1849040, 2033944, 2542430, 4067888, 5084860, 10169720, 20339440]

約数ペア:

[(1, 20339440), (2, 10169720), (4, 5084860), (5, 4067888), (8, 2542430), (10, 2033944), (11, 1849040), (16, 1271215), (20, 1016972), (22, 924520), (29, 701360), (40, 508486), (44, 462260), (55, 369808), (58, 350680), (80, 254243), (88, 231130), (110, 184904), (116, 175340), (145, 140272), (176, 115565), (220, 92452), (232, 87670), (290, 70136), (319, 63760), (440, 46226), (464, 43835), (580, 35068), (638, 31880), (797, 25520), (880, 23113), (1160, 17534), (1276, 15940), (1594, 12760), (1595, 12752), (2320, 8767), (2552, 7970), (3188, 6380), (3190, 6376), (3985, 5104)]