19004920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{919}}^1$

素因数の和:988

約数の個数: 64

約数和(自身を含む): 47692800

約数和(自身を除く): 28687880

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, 919, 940, 1034, 1838, 1880, 2068, 2585, 3676, 4136, 4595, 5170, 7352, 9190, 10109, 10340, 18380, 20218, 20680, 36760, 40436, 43193, 50545, 80872, 86386, 101090, 172772, 202180, 215965, 345544, 404360, 431930, 475123, 863860, 950246, 1727720, 1900492, 2375615, 3800984, 4751230, 9502460, 19004920]

約数ペア:

[(1, 19004920), (2, 9502460), (4, 4751230), (5, 3800984), (8, 2375615), (10, 1900492), (11, 1727720), (20, 950246), (22, 863860), (40, 475123), (44, 431930), (47, 404360), (55, 345544), (88, 215965), (94, 202180), (110, 172772), (188, 101090), (220, 86386), (235, 80872), (376, 50545), (440, 43193), (470, 40436), (517, 36760), (919, 20680), (940, 20218), (1034, 18380), (1838, 10340), (1880, 10109), (2068, 9190), (2585, 7352), (3676, 5170), (4136, 4595)]