68547920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{109}}^1\times {\mathrm{1123}}^1$

素因数の和:1252

約数の個数: 80

約数和(自身を含む): 183976320

約数和(自身を除く): 115428400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 109, 112, 140, 218, 280, 436, 545, 560, 763, 872, 1090, 1123, 1526, 1744, 2180, 2246, 3052, 3815, 4360, 4492, 5615, 6104, 7630, 7861, 8720, 8984, 11230, 12208, 15260, 15722, 17968, 22460, 30520, 31444, 39305, 44920, 61040, 62888, 78610, 89840, 122407, 125776, 157220, 244814, 314440, 489628, 612035, 628880, 856849, 979256, 1224070, 1713698, 1958512, 2448140, 3427396, 4284245, 4896280, 6854792, 8568490, 9792560, 13709584, 17136980, 34273960, 68547920]

約数ペア:

[(1, 68547920), (2, 34273960), (4, 17136980), (5, 13709584), (7, 9792560), (8, 8568490), (10, 6854792), (14, 4896280), (16, 4284245), (20, 3427396), (28, 2448140), (35, 1958512), (40, 1713698), (56, 1224070), (70, 979256), (80, 856849), (109, 628880), (112, 612035), (140, 489628), (218, 314440), (280, 244814), (436, 157220), (545, 125776), (560, 122407), (763, 89840), (872, 78610), (1090, 62888), (1123, 61040), (1526, 44920), (1744, 39305), (2180, 31444), (2246, 30520), (3052, 22460), (3815, 17968), (4360, 15722), (4492, 15260), (5615, 12208), (6104, 11230), (7630, 8984), (7861, 8720)]