20505618

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{67}}^1\times {\mathrm{347}}^1$

素因数の和:436

約数の個数: 72

約数和(自身を含む): 52605072

約数和(自身を除く): 32099454

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 67, 98, 126, 134, 147, 201, 294, 347, 402, 441, 469, 603, 694, 882, 938, 1041, 1206, 1407, 2082, 2429, 2814, 3123, 3283, 4221, 4858, 6246, 6566, 7287, 8442, 9849, 14574, 17003, 19698, 21861, 23249, 29547, 34006, 43722, 46498, 51009, 59094, 69747, 102018, 139494, 153027, 162743, 209241, 306054, 325486, 418482, 488229, 976458, 1139201, 1464687, 2278402, 2929374, 3417603, 6835206, 10252809, 20505618]

約数ペア:

[(1, 20505618), (2, 10252809), (3, 6835206), (6, 3417603), (7, 2929374), (9, 2278402), (14, 1464687), (18, 1139201), (21, 976458), (42, 488229), (49, 418482), (63, 325486), (67, 306054), (98, 209241), (126, 162743), (134, 153027), (147, 139494), (201, 102018), (294, 69747), (347, 59094), (402, 51009), (441, 46498), (469, 43722), (603, 34006), (694, 29547), (882, 23249), (938, 21861), (1041, 19698), (1206, 17003), (1407, 14574), (2082, 9849), (2429, 8442), (2814, 7287), (3123, 6566), (3283, 6246), (4221, 4858)]