21987768

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2251}}^1$

素因数の和:2308

約数の個数: 64

約数和(自身を含む): 61614720

約数和(自身を除く): 39626952

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 37, 44, 66, 74, 88, 111, 132, 148, 222, 264, 296, 407, 444, 814, 888, 1221, 1628, 2251, 2442, 3256, 4502, 4884, 6753, 9004, 9768, 13506, 18008, 24761, 27012, 49522, 54024, 74283, 83287, 99044, 148566, 166574, 198088, 249861, 297132, 333148, 499722, 594264, 666296, 916157, 999444, 1832314, 1998888, 2748471, 3664628, 5496942, 7329256, 10993884, 21987768]

約数ペア:

[(1, 21987768), (2, 10993884), (3, 7329256), (4, 5496942), (6, 3664628), (8, 2748471), (11, 1998888), (12, 1832314), (22, 999444), (24, 916157), (33, 666296), (37, 594264), (44, 499722), (66, 333148), (74, 297132), (88, 249861), (111, 198088), (132, 166574), (148, 148566), (222, 99044), (264, 83287), (296, 74283), (407, 54024), (444, 49522), (814, 27012), (888, 24761), (1221, 18008), (1628, 13506), (2251, 9768), (2442, 9004), (3256, 6753), (4502, 4884)]