220478640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{491}}^1\times {\mathrm{1871}}^1$

素因数の和:2378

約数の個数: 80

約数和(自身を含む): 685241856

約数和(自身を除く): 464763216

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 491, 982, 1473, 1871, 1964, 2455, 2946, 3742, 3928, 4910, 5613, 5892, 7365, 7484, 7856, 9355, 9820, 11226, 11784, 14730, 14968, 18710, 19640, 22452, 23568, 28065, 29460, 29936, 37420, 39280, 44904, 56130, 58920, 74840, 89808, 112260, 117840, 149680, 224520, 449040, 918661, 1837322, 2755983, 3674644, 4593305, 5511966, 7349288, 9186610, 11023932, 13779915, 14698576, 18373220, 22047864, 27559830, 36746440, 44095728, 55119660, 73492880, 110239320, 220478640]

約数ペア:

[(1, 220478640), (2, 110239320), (3, 73492880), (4, 55119660), (5, 44095728), (6, 36746440), (8, 27559830), (10, 22047864), (12, 18373220), (15, 14698576), (16, 13779915), (20, 11023932), (24, 9186610), (30, 7349288), (40, 5511966), (48, 4593305), (60, 3674644), (80, 2755983), (120, 1837322), (240, 918661), (491, 449040), (982, 224520), (1473, 149680), (1871, 117840), (1964, 112260), (2455, 89808), (2946, 74840), (3742, 58920), (3928, 56130), (4910, 44904), (5613, 39280), (5892, 37420), (7365, 29936), (7484, 29460), (7856, 28065), (9355, 23568), (9820, 22452), (11226, 19640), (11784, 18710), (14730, 14968)]