81061120

素因数分解:

$2^8\times 5^1\times 7^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:220

約数の個数: 144

約数和(自身を含む): 226638720

約数和(自身を除く): 145577600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 83, 109, 112, 128, 140, 160, 166, 218, 224, 256, 280, 320, 332, 415, 436, 448, 545, 560, 581, 640, 664, 763, 830, 872, 896, 1090, 1120, 1162, 1280, 1328, 1526, 1660, 1744, 1792, 2180, 2240, 2324, 2656, 2905, 3052, 3320, 3488, 3815, 4360, 4480, 4648, 5312, 5810, 6104, 6640, 6976, 7630, 8720, 8960, 9047, 9296, 10624, 11620, 12208, 13280, 13952, 15260, 17440, 18094, 18592, 21248, 23240, 24416, 26560, 27904, 30520, 34880, 36188, 37184, 45235, 46480, 48832, 53120, 61040, 63329, 69760, 72376, 74368, 90470, 92960, 97664, 106240, 122080, 126658, 139520, 144752, 148736, 180940, 185920, 195328, 244160, 253316, 289504, 316645, 361880, 371840, 488320, 506632, 579008, 633290, 723760, 743680, 976640, 1013264, 1158016, 1266580, 1447520, 2026528, 2316032, 2533160, 2895040, 4053056, 5066320, 5790080, 8106112, 10132640, 11580160, 16212224, 20265280, 40530560, 81061120]

約数ペア:

[(1, 81061120), (2, 40530560), (4, 20265280), (5, 16212224), (7, 11580160), (8, 10132640), (10, 8106112), (14, 5790080), (16, 5066320), (20, 4053056), (28, 2895040), (32, 2533160), (35, 2316032), (40, 2026528), (56, 1447520), (64, 1266580), (70, 1158016), (80, 1013264), (83, 976640), (109, 743680), (112, 723760), (128, 633290), (140, 579008), (160, 506632), (166, 488320), (218, 371840), (224, 361880), (256, 316645), (280, 289504), (320, 253316), (332, 244160), (415, 195328), (436, 185920), (448, 180940), (545, 148736), (560, 144752), (581, 139520), (640, 126658), (664, 122080), (763, 106240), (830, 97664), (872, 92960), (896, 90470), (1090, 74368), (1120, 72376), (1162, 69760), (1280, 63329), (1328, 61040), (1526, 53120), (1660, 48832), (1744, 46480), (1792, 45235), (2180, 37184), (2240, 36188), (2324, 34880), (2656, 30520), (2905, 27904), (3052, 26560), (3320, 24416), (3488, 23240), (3815, 21248), (4360, 18592), (4480, 18094), (4648, 17440), (5312, 15260), (5810, 13952), (6104, 13280), (6640, 12208), (6976, 11620), (7630, 10624), (8720, 9296), (8960, 9047)]