20510880

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1$

素因数の和:223

約数の個数: 192

約数和(自身を含む): 73664640

約数和(自身を除く): 53153760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 19, 20, 24, 26, 30, 32, 38, 39, 40, 48, 52, 57, 60, 65, 76, 78, 80, 95, 96, 104, 114, 120, 130, 152, 156, 160, 173, 190, 195, 208, 228, 240, 247, 260, 285, 304, 312, 346, 380, 390, 416, 456, 480, 494, 519, 520, 570, 608, 624, 692, 741, 760, 780, 865, 912, 988, 1038, 1040, 1140, 1235, 1248, 1384, 1482, 1520, 1560, 1730, 1824, 1976, 2076, 2080, 2249, 2280, 2470, 2595, 2768, 2964, 3040, 3120, 3287, 3460, 3705, 3952, 4152, 4498, 4560, 4940, 5190, 5536, 5928, 6240, 6574, 6747, 6920, 7410, 7904, 8304, 8996, 9120, 9861, 9880, 10380, 11245, 11856, 13148, 13494, 13840, 14820, 16435, 16608, 17992, 19722, 19760, 20760, 22490, 23712, 26296, 26988, 27680, 29640, 32870, 33735, 35984, 39444, 39520, 41520, 42731, 44980, 49305, 52592, 53976, 59280, 65740, 67470, 71968, 78888, 83040, 85462, 89960, 98610, 105184, 107952, 118560, 128193, 131480, 134940, 157776, 170924, 179920, 197220, 213655, 215904, 256386, 262960, 269880, 315552, 341848, 359840, 394440, 427310, 512772, 525920, 539760, 640965, 683696, 788880, 854620, 1025544, 1079520, 1281930, 1367392, 1577760, 1709240, 2051088, 2563860, 3418480, 4102176, 5127720, 6836960, 10255440, 20510880]

約数ペア:

[(1, 20510880), (2, 10255440), (3, 6836960), (4, 5127720), (5, 4102176), (6, 3418480), (8, 2563860), (10, 2051088), (12, 1709240), (13, 1577760), (15, 1367392), (16, 1281930), (19, 1079520), (20, 1025544), (24, 854620), (26, 788880), (30, 683696), (32, 640965), (38, 539760), (39, 525920), (40, 512772), (48, 427310), (52, 394440), (57, 359840), (60, 341848), (65, 315552), (76, 269880), (78, 262960), (80, 256386), (95, 215904), (96, 213655), (104, 197220), (114, 179920), (120, 170924), (130, 157776), (152, 134940), (156, 131480), (160, 128193), (173, 118560), (190, 107952), (195, 105184), (208, 98610), (228, 89960), (240, 85462), (247, 83040), (260, 78888), (285, 71968), (304, 67470), (312, 65740), (346, 59280), (380, 53976), (390, 52592), (416, 49305), (456, 44980), (480, 42731), (494, 41520), (519, 39520), (520, 39444), (570, 35984), (608, 33735), (624, 32870), (692, 29640), (741, 27680), (760, 26988), (780, 26296), (865, 23712), (912, 22490), (988, 20760), (1038, 19760), (1040, 19722), (1140, 17992), (1235, 16608), (1248, 16435), (1384, 14820), (1482, 13840), (1520, 13494), (1560, 13148), (1730, 11856), (1824, 11245), (1976, 10380), (2076, 9880), (2080, 9861), (2249, 9120), (2280, 8996), (2470, 8304), (2595, 7904), (2768, 7410), (2964, 6920), (3040, 6747), (3120, 6574), (3287, 6240), (3460, 5928), (3705, 5536), (3952, 5190), (4152, 4940), (4498, 4560)]