81497680

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2503}}^1$

素因数の和:2564

約数の個数: 80

約数和(自身を含む): 212379264

約数和(自身を除く): 130881584

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 37, 40, 44, 55, 74, 80, 88, 110, 148, 176, 185, 220, 296, 370, 407, 440, 592, 740, 814, 880, 1480, 1628, 2035, 2503, 2960, 3256, 4070, 5006, 6512, 8140, 10012, 12515, 16280, 20024, 25030, 27533, 32560, 40048, 50060, 55066, 92611, 100120, 110132, 137665, 185222, 200240, 220264, 275330, 370444, 440528, 463055, 550660, 740888, 926110, 1018721, 1101320, 1481776, 1852220, 2037442, 2202640, 3704440, 4074884, 5093605, 7408880, 8149768, 10187210, 16299536, 20374420, 40748840, 81497680]

約数ペア:

[(1, 81497680), (2, 40748840), (4, 20374420), (5, 16299536), (8, 10187210), (10, 8149768), (11, 7408880), (16, 5093605), (20, 4074884), (22, 3704440), (37, 2202640), (40, 2037442), (44, 1852220), (55, 1481776), (74, 1101320), (80, 1018721), (88, 926110), (110, 740888), (148, 550660), (176, 463055), (185, 440528), (220, 370444), (296, 275330), (370, 220264), (407, 200240), (440, 185222), (592, 137665), (740, 110132), (814, 100120), (880, 92611), (1480, 55066), (1628, 50060), (2035, 40048), (2503, 32560), (2960, 27533), (3256, 25030), (4070, 20024), (5006, 16280), (6512, 12515), (8140, 10012)]