19818786

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{311}}^1$

素因数の和:391

約数の個数: 64

約数和(自身を含む): 46126080

約数和(自身を除く): 26307294

約数列:

[1, 2, 3, 6, 13, 19, 26, 38, 39, 43, 57, 78, 86, 114, 129, 247, 258, 311, 494, 559, 622, 741, 817, 933, 1118, 1482, 1634, 1677, 1866, 2451, 3354, 4043, 4902, 5909, 8086, 10621, 11818, 12129, 13373, 17727, 21242, 24258, 26746, 31863, 35454, 40119, 63726, 76817, 80238, 153634, 173849, 230451, 254087, 347698, 460902, 508174, 521547, 762261, 1043094, 1524522, 3303131, 6606262, 9909393, 19818786]

約数ペア:

[(1, 19818786), (2, 9909393), (3, 6606262), (6, 3303131), (13, 1524522), (19, 1043094), (26, 762261), (38, 521547), (39, 508174), (43, 460902), (57, 347698), (78, 254087), (86, 230451), (114, 173849), (129, 153634), (247, 80238), (258, 76817), (311, 63726), (494, 40119), (559, 35454), (622, 31863), (741, 26746), (817, 24258), (933, 21242), (1118, 17727), (1482, 13373), (1634, 12129), (1677, 11818), (1866, 10621), (2451, 8086), (3354, 5909), (4043, 4902)]