28047591

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1$

素因数の和:117

約数の個数: 96

約数和(自身を含む): 53114880

約数和(自身を除く): 25067289

約数列:

[1, 3, 9, 11, 13, 19, 31, 33, 37, 39, 57, 93, 99, 111, 117, 143, 171, 209, 247, 279, 333, 341, 403, 407, 429, 481, 589, 627, 703, 741, 1023, 1147, 1209, 1221, 1287, 1443, 1767, 1881, 2109, 2223, 2717, 3069, 3441, 3627, 3663, 4329, 4433, 5291, 5301, 6327, 6479, 7657, 7733, 8151, 9139, 10323, 12617, 13299, 14911, 15873, 19437, 21793, 22971, 23199, 24453, 27417, 37851, 39897, 44733, 47619, 58311, 65379, 68913, 69597, 82251, 84227, 100529, 113553, 134199, 164021, 196137, 239723, 252681, 283309, 301587, 492063, 719169, 758043, 849927, 904761, 1476189, 2157507, 2549781, 3116399, 9349197, 28047591]

約数ペア:

[(1, 28047591), (3, 9349197), (9, 3116399), (11, 2549781), (13, 2157507), (19, 1476189), (31, 904761), (33, 849927), (37, 758043), (39, 719169), (57, 492063), (93, 301587), (99, 283309), (111, 252681), (117, 239723), (143, 196137), (171, 164021), (209, 134199), (247, 113553), (279, 100529), (333, 84227), (341, 82251), (403, 69597), (407, 68913), (429, 65379), (481, 58311), (589, 47619), (627, 44733), (703, 39897), (741, 37851), (1023, 27417), (1147, 24453), (1209, 23199), (1221, 22971), (1287, 21793), (1443, 19437), (1767, 15873), (1881, 14911), (2109, 13299), (2223, 12617), (2717, 10323), (3069, 9139), (3441, 8151), (3627, 7733), (3663, 7657), (4329, 6479), (4433, 6327), (5291, 5301)]