21725160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{919}}^1$

素因数の和:1130

約数の個数: 64

約数和(自身を含む): 65577600

約数和(自身を除く): 43852440

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 197, 394, 591, 788, 919, 985, 1182, 1576, 1838, 1970, 2364, 2757, 2955, 3676, 3940, 4595, 4728, 5514, 5910, 7352, 7880, 9190, 11028, 11820, 13785, 18380, 22056, 23640, 27570, 36760, 55140, 110280, 181043, 362086, 543129, 724172, 905215, 1086258, 1448344, 1810430, 2172516, 2715645, 3620860, 4345032, 5431290, 7241720, 10862580, 21725160]

約数ペア:

[(1, 21725160), (2, 10862580), (3, 7241720), (4, 5431290), (5, 4345032), (6, 3620860), (8, 2715645), (10, 2172516), (12, 1810430), (15, 1448344), (20, 1086258), (24, 905215), (30, 724172), (40, 543129), (60, 362086), (120, 181043), (197, 110280), (394, 55140), (591, 36760), (788, 27570), (919, 23640), (985, 22056), (1182, 18380), (1576, 13785), (1838, 11820), (1970, 11028), (2364, 9190), (2757, 7880), (2955, 7352), (3676, 5910), (3940, 5514), (4595, 4728)]