19446680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{229}}^1$

素因数の和:444

約数の個数: 64

約数和(自身を含む): 48189600

約数和(自身を除く): 28742920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 193, 220, 229, 386, 440, 458, 772, 916, 965, 1145, 1544, 1832, 1930, 2123, 2290, 2519, 3860, 4246, 4580, 5038, 7720, 8492, 9160, 10076, 10615, 12595, 16984, 20152, 21230, 25190, 42460, 44197, 50380, 84920, 88394, 100760, 176788, 220985, 353576, 441970, 486167, 883940, 972334, 1767880, 1944668, 2430835, 3889336, 4861670, 9723340, 19446680]

約数ペア:

[(1, 19446680), (2, 9723340), (4, 4861670), (5, 3889336), (8, 2430835), (10, 1944668), (11, 1767880), (20, 972334), (22, 883940), (40, 486167), (44, 441970), (55, 353576), (88, 220985), (110, 176788), (193, 100760), (220, 88394), (229, 84920), (386, 50380), (440, 44197), (458, 42460), (772, 25190), (916, 21230), (965, 20152), (1145, 16984), (1544, 12595), (1832, 10615), (1930, 10076), (2123, 9160), (2290, 8492), (2519, 7720), (3860, 5038), (4246, 4580)]