217860188

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{449}}^1$

素因数の和:547

約数の個数: 96

約数和(自身を含む): 496742400

約数和(自身を除く): 278882212

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 31, 43, 52, 62, 86, 91, 124, 172, 182, 217, 301, 364, 403, 434, 449, 559, 602, 806, 868, 898, 1118, 1204, 1333, 1612, 1796, 2236, 2666, 2821, 3143, 3913, 5332, 5642, 5837, 6286, 7826, 9331, 11284, 11674, 12572, 13919, 15652, 17329, 18662, 19307, 23348, 27838, 34658, 37324, 38614, 40859, 55676, 69316, 77228, 81718, 97433, 121303, 135149, 163436, 180947, 194866, 242606, 250991, 270298, 361894, 389732, 485212, 501982, 540596, 598517, 723788, 1003964, 1197034, 1266629, 1756937, 2394068, 2533258, 3513874, 4189619, 5066516, 7027748, 7780721, 8379238, 15561442, 16758476, 31122884, 54465047, 108930094, 217860188]

約数ペア:

[(1, 217860188), (2, 108930094), (4, 54465047), (7, 31122884), (13, 16758476), (14, 15561442), (26, 8379238), (28, 7780721), (31, 7027748), (43, 5066516), (52, 4189619), (62, 3513874), (86, 2533258), (91, 2394068), (124, 1756937), (172, 1266629), (182, 1197034), (217, 1003964), (301, 723788), (364, 598517), (403, 540596), (434, 501982), (449, 485212), (559, 389732), (602, 361894), (806, 270298), (868, 250991), (898, 242606), (1118, 194866), (1204, 180947), (1333, 163436), (1612, 135149), (1796, 121303), (2236, 97433), (2666, 81718), (2821, 77228), (3143, 69316), (3913, 55676), (5332, 40859), (5642, 38614), (5837, 37324), (6286, 34658), (7826, 27838), (9331, 23348), (11284, 19307), (11674, 18662), (12572, 17329), (13919, 15652)]