199481009

素因数分解:

$7^2\times {\mathrm{13}}^3\times {\mathrm{17}}^1\times {\mathrm{109}}^1$

素因数の和:179

約数の個数: 48

約数和(自身を含む): 268606800

約数和(自身を除く): 69125791

約数列:

[1, 7, 13, 17, 49, 91, 109, 119, 169, 221, 637, 763, 833, 1183, 1417, 1547, 1853, 2197, 2873, 5341, 8281, 9919, 10829, 12971, 15379, 18421, 20111, 24089, 37349, 69433, 90797, 107653, 128947, 140777, 168623, 239473, 261443, 313157, 902629, 1180361, 1676311, 1830101, 2192099, 4071041, 11734177, 15344693, 28497287, 199481009]

約数ペア:

[(1, 199481009), (7, 28497287), (13, 15344693), (17, 11734177), (49, 4071041), (91, 2192099), (109, 1830101), (119, 1676311), (169, 1180361), (221, 902629), (637, 313157), (763, 261443), (833, 239473), (1183, 168623), (1417, 140777), (1547, 128947), (1853, 107653), (2197, 90797), (2873, 69433), (5341, 37349), (8281, 24089), (9919, 20111), (10829, 18421), (12971, 15379)]