18663840

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{997}}^1$

素因数の和:1031

約数の個数: 144

約数和(自身を含む): 68658408

約数和(自身を除く): 49994568

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 20, 24, 26, 30, 32, 36, 39, 40, 45, 48, 52, 60, 65, 72, 78, 80, 90, 96, 104, 117, 120, 130, 144, 156, 160, 180, 195, 208, 234, 240, 260, 288, 312, 360, 390, 416, 468, 480, 520, 585, 624, 720, 780, 936, 997, 1040, 1170, 1248, 1440, 1560, 1872, 1994, 2080, 2340, 2991, 3120, 3744, 3988, 4680, 4985, 5982, 6240, 7976, 8973, 9360, 9970, 11964, 12961, 14955, 15952, 17946, 18720, 19940, 23928, 25922, 29910, 31904, 35892, 38883, 39880, 44865, 47856, 51844, 59820, 64805, 71784, 77766, 79760, 89730, 95712, 103688, 116649, 119640, 129610, 143568, 155532, 159520, 179460, 194415, 207376, 233298, 239280, 259220, 287136, 311064, 358920, 388830, 414752, 466596, 478560, 518440, 583245, 622128, 717840, 777660, 933192, 1036880, 1166490, 1244256, 1435680, 1555320, 1866384, 2073760, 2332980, 3110640, 3732768, 4665960, 6221280, 9331920, 18663840]

約数ペア:

[(1, 18663840), (2, 9331920), (3, 6221280), (4, 4665960), (5, 3732768), (6, 3110640), (8, 2332980), (9, 2073760), (10, 1866384), (12, 1555320), (13, 1435680), (15, 1244256), (16, 1166490), (18, 1036880), (20, 933192), (24, 777660), (26, 717840), (30, 622128), (32, 583245), (36, 518440), (39, 478560), (40, 466596), (45, 414752), (48, 388830), (52, 358920), (60, 311064), (65, 287136), (72, 259220), (78, 239280), (80, 233298), (90, 207376), (96, 194415), (104, 179460), (117, 159520), (120, 155532), (130, 143568), (144, 129610), (156, 119640), (160, 116649), (180, 103688), (195, 95712), (208, 89730), (234, 79760), (240, 77766), (260, 71784), (288, 64805), (312, 59820), (360, 51844), (390, 47856), (416, 44865), (468, 39880), (480, 38883), (520, 35892), (585, 31904), (624, 29910), (720, 25922), (780, 23928), (936, 19940), (997, 18720), (1040, 17946), (1170, 15952), (1248, 14955), (1440, 12961), (1560, 11964), (1872, 9970), (1994, 9360), (2080, 8973), (2340, 7976), (2991, 6240), (3120, 5982), (3744, 4985), (3988, 4680)]