20216457080

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1\times {\mathrm{42937}}^1$

素因数の和:43176

約数の個数: 64

約数和(自身を含む): 46373040000

約数和(自身を除く): 26156582920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 149, 158, 298, 316, 395, 596, 632, 745, 790, 1192, 1490, 1580, 2980, 3160, 5960, 11771, 23542, 42937, 47084, 58855, 85874, 94168, 117710, 171748, 214685, 235420, 343496, 429370, 470840, 858740, 1717480, 3392023, 6397613, 6784046, 12795226, 13568092, 16960115, 25590452, 27136184, 31988065, 33920230, 51180904, 63976130, 67840460, 127952260, 135680920, 255904520, 505411427, 1010822854, 2021645708, 2527057135, 4043291416, 5054114270, 10108228540, 20216457080]

約数ペア:

[(1, 20216457080), (2, 10108228540), (4, 5054114270), (5, 4043291416), (8, 2527057135), (10, 2021645708), (20, 1010822854), (40, 505411427), (79, 255904520), (149, 135680920), (158, 127952260), (298, 67840460), (316, 63976130), (395, 51180904), (596, 33920230), (632, 31988065), (745, 27136184), (790, 25590452), (1192, 16960115), (1490, 13568092), (1580, 12795226), (2980, 6784046), (3160, 6397613), (5960, 3392023), (11771, 1717480), (23542, 858740), (42937, 470840), (47084, 429370), (58855, 343496), (85874, 235420), (94168, 214685), (117710, 171748)]