123478320

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1097}}^1$

素因数の和:1187

約数の個数: 160

約数和(自身を含む): 444400128

約数和(自身を除く): 320921808

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 67, 70, 80, 84, 105, 112, 120, 134, 140, 168, 201, 210, 240, 268, 280, 335, 336, 402, 420, 469, 536, 560, 670, 804, 840, 938, 1005, 1072, 1097, 1340, 1407, 1608, 1680, 1876, 2010, 2194, 2345, 2680, 2814, 3216, 3291, 3752, 4020, 4388, 4690, 5360, 5485, 5628, 6582, 7035, 7504, 7679, 8040, 8776, 9380, 10970, 11256, 13164, 14070, 15358, 16080, 16455, 17552, 18760, 21940, 22512, 23037, 26328, 28140, 30716, 32910, 37520, 38395, 43880, 46074, 52656, 56280, 61432, 65820, 73499, 76790, 87760, 92148, 112560, 115185, 122864, 131640, 146998, 153580, 184296, 220497, 230370, 263280, 293996, 307160, 367495, 368592, 440994, 460740, 514493, 587992, 614320, 734990, 881988, 921480, 1028986, 1102485, 1175984, 1469980, 1543479, 1763976, 1842960, 2057972, 2204970, 2572465, 2939960, 3086958, 3527952, 4115944, 4409940, 5144930, 5879920, 6173916, 7717395, 8231888, 8819880, 10289860, 12347832, 15434790, 17639760, 20579720, 24695664, 30869580, 41159440, 61739160, 123478320]

約数ペア:

[(1, 123478320), (2, 61739160), (3, 41159440), (4, 30869580), (5, 24695664), (6, 20579720), (7, 17639760), (8, 15434790), (10, 12347832), (12, 10289860), (14, 8819880), (15, 8231888), (16, 7717395), (20, 6173916), (21, 5879920), (24, 5144930), (28, 4409940), (30, 4115944), (35, 3527952), (40, 3086958), (42, 2939960), (48, 2572465), (56, 2204970), (60, 2057972), (67, 1842960), (70, 1763976), (80, 1543479), (84, 1469980), (105, 1175984), (112, 1102485), (120, 1028986), (134, 921480), (140, 881988), (168, 734990), (201, 614320), (210, 587992), (240, 514493), (268, 460740), (280, 440994), (335, 368592), (336, 367495), (402, 307160), (420, 293996), (469, 263280), (536, 230370), (560, 220497), (670, 184296), (804, 153580), (840, 146998), (938, 131640), (1005, 122864), (1072, 115185), (1097, 112560), (1340, 92148), (1407, 87760), (1608, 76790), (1680, 73499), (1876, 65820), (2010, 61432), (2194, 56280), (2345, 52656), (2680, 46074), (2814, 43880), (3216, 38395), (3291, 37520), (3752, 32910), (4020, 30716), (4388, 28140), (4690, 26328), (5360, 23037), (5485, 22512), (5628, 21940), (6582, 18760), (7035, 17552), (7504, 16455), (7679, 16080), (8040, 15358), (8776, 14070), (9380, 13164), (10970, 11256)]