19857988880

素因数分解:

$2^4\times 5^1\times {\mathrm{269}}^1\times {\mathrm{443}}^1\times {\mathrm{2083}}^1$

素因数の和:2808

約数の個数: 80

約数和(自身を含む): 46468365120

約数和(自身を除く): 26610376240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269, 443, 538, 886, 1076, 1345, 1772, 2083, 2152, 2215, 2690, 3544, 4166, 4304, 4430, 5380, 7088, 8332, 8860, 10415, 10760, 16664, 17720, 20830, 21520, 33328, 35440, 41660, 83320, 119167, 166640, 238334, 476668, 560327, 595835, 922769, 953336, 1120654, 1191670, 1845538, 1906672, 2241308, 2383340, 2801635, 3691076, 4482616, 4613845, 4766680, 5603270, 7382152, 8965232, 9227690, 9533360, 11206540, 14764304, 18455380, 22413080, 36910760, 44826160, 73821520, 248224861, 496449722, 992899444, 1241124305, 1985798888, 2482248610, 3971597776, 4964497220, 9928994440, 19857988880]

約数ペア:

[(1, 19857988880), (2, 9928994440), (4, 4964497220), (5, 3971597776), (8, 2482248610), (10, 1985798888), (16, 1241124305), (20, 992899444), (40, 496449722), (80, 248224861), (269, 73821520), (443, 44826160), (538, 36910760), (886, 22413080), (1076, 18455380), (1345, 14764304), (1772, 11206540), (2083, 9533360), (2152, 9227690), (2215, 8965232), (2690, 7382152), (3544, 5603270), (4166, 4766680), (4304, 4613845), (4430, 4482616), (5380, 3691076), (7088, 2801635), (8332, 2383340), (8860, 2241308), (10415, 1906672), (10760, 1845538), (16664, 1191670), (17720, 1120654), (20830, 953336), (21520, 922769), (33328, 595835), (35440, 560327), (41660, 476668), (83320, 238334), (119167, 166640)]