199944549

素因数分解:

$3^2\times 7^2\times {\mathrm{67}}^2\times {\mathrm{101}}^1$

素因数の和:255

約数の個数: 54

約数和(自身を含む): 344427174

約数和(自身を除く): 144482625

約数列:

[1, 3, 7, 9, 21, 49, 63, 67, 101, 147, 201, 303, 441, 469, 603, 707, 909, 1407, 2121, 3283, 4221, 4489, 4949, 6363, 6767, 9849, 13467, 14847, 20301, 29547, 31423, 40401, 44541, 47369, 60903, 94269, 142107, 219961, 282807, 331583, 426321, 453389, 659883, 994749, 1360167, 1979649, 2984247, 3173723, 4080501, 9521169, 22216061, 28563507, 66648183, 199944549]

約数ペア:

[(1, 199944549), (3, 66648183), (7, 28563507), (9, 22216061), (21, 9521169), (49, 4080501), (63, 3173723), (67, 2984247), (101, 1979649), (147, 1360167), (201, 994749), (303, 659883), (441, 453389), (469, 426321), (603, 331583), (707, 282807), (909, 219961), (1407, 142107), (2121, 94269), (3283, 60903), (4221, 47369), (4489, 44541), (4949, 40401), (6363, 31423), (6767, 29547), (9849, 20301), (13467, 14847)]