81886860

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41357}}^1$

素因数の和:41383

約数の個数: 72

約数和(自身を含む): 270977616

約数和(自身を除く): 189090756

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 44, 45, 55, 60, 66, 90, 99, 110, 132, 165, 180, 198, 220, 330, 396, 495, 660, 990, 1980, 41357, 82714, 124071, 165428, 206785, 248142, 372213, 413570, 454927, 496284, 620355, 744426, 827140, 909854, 1240710, 1364781, 1488852, 1819708, 1861065, 2274635, 2481420, 2729562, 3722130, 4094343, 4549270, 5459124, 6823905, 7444260, 8188686, 9098540, 13647810, 16377372, 20471715, 27295620, 40943430, 81886860]

約数ペア:

[(1, 81886860), (2, 40943430), (3, 27295620), (4, 20471715), (5, 16377372), (6, 13647810), (9, 9098540), (10, 8188686), (11, 7444260), (12, 6823905), (15, 5459124), (18, 4549270), (20, 4094343), (22, 3722130), (30, 2729562), (33, 2481420), (36, 2274635), (44, 1861065), (45, 1819708), (55, 1488852), (60, 1364781), (66, 1240710), (90, 909854), (99, 827140), (110, 744426), (132, 620355), (165, 496284), (180, 454927), (198, 413570), (220, 372213), (330, 248142), (396, 206785), (495, 165428), (660, 124071), (990, 82714), (1980, 41357)]