280807740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{7919}}^1$

素因数の和:8131

約数の個数: 72

約数和(自身を含む): 856215360

約数和(自身を除く): 575407620

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 197, 394, 591, 788, 985, 1182, 1773, 1970, 2364, 2955, 3546, 3940, 5910, 7092, 7919, 8865, 11820, 15838, 17730, 23757, 31676, 35460, 39595, 47514, 71271, 79190, 95028, 118785, 142542, 158380, 237570, 285084, 356355, 475140, 712710, 1425420, 1560043, 3120086, 4680129, 6240172, 7800215, 9360258, 14040387, 15600430, 18720516, 23400645, 28080774, 31200860, 46801290, 56161548, 70201935, 93602580, 140403870, 280807740]

約数ペア:

[(1, 280807740), (2, 140403870), (3, 93602580), (4, 70201935), (5, 56161548), (6, 46801290), (9, 31200860), (10, 28080774), (12, 23400645), (15, 18720516), (18, 15600430), (20, 14040387), (30, 9360258), (36, 7800215), (45, 6240172), (60, 4680129), (90, 3120086), (180, 1560043), (197, 1425420), (394, 712710), (591, 475140), (788, 356355), (985, 285084), (1182, 237570), (1773, 158380), (1970, 142542), (2364, 118785), (2955, 95028), (3546, 79190), (3940, 71271), (5910, 47514), (7092, 39595), (7919, 35460), (8865, 31676), (11820, 23757), (15838, 17730)]