28210280

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:451

約数の個数: 96

約数和(自身を含む): 76026600

約数和(自身を除く): 47816320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 49, 56, 70, 74, 98, 140, 148, 185, 196, 245, 259, 280, 296, 370, 389, 392, 490, 518, 740, 778, 980, 1036, 1295, 1480, 1556, 1813, 1945, 1960, 2072, 2590, 2723, 3112, 3626, 3890, 5180, 5446, 7252, 7780, 9065, 10360, 10892, 13615, 14393, 14504, 15560, 18130, 19061, 21784, 27230, 28786, 36260, 38122, 54460, 57572, 71965, 72520, 76244, 95305, 100751, 108920, 115144, 143930, 152488, 190610, 201502, 287860, 381220, 403004, 503755, 575720, 705257, 762440, 806008, 1007510, 1410514, 2015020, 2821028, 3526285, 4030040, 5642056, 7052570, 14105140, 28210280]

約数ペア:

[(1, 28210280), (2, 14105140), (4, 7052570), (5, 5642056), (7, 4030040), (8, 3526285), (10, 2821028), (14, 2015020), (20, 1410514), (28, 1007510), (35, 806008), (37, 762440), (40, 705257), (49, 575720), (56, 503755), (70, 403004), (74, 381220), (98, 287860), (140, 201502), (148, 190610), (185, 152488), (196, 143930), (245, 115144), (259, 108920), (280, 100751), (296, 95305), (370, 76244), (389, 72520), (392, 71965), (490, 57572), (518, 54460), (740, 38122), (778, 36260), (980, 28786), (1036, 27230), (1295, 21784), (1480, 19061), (1556, 18130), (1813, 15560), (1945, 14504), (1960, 14393), (2072, 13615), (2590, 10892), (2723, 10360), (3112, 9065), (3626, 7780), (3890, 7252), (5180, 5446)]