28208763

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:225

約数の個数: 64

約数和(自身を含む): 49904640

約数和(自身を除く): 21695877

約数列:

[1, 3, 9, 11, 17, 27, 33, 37, 51, 99, 111, 151, 153, 187, 297, 333, 407, 453, 459, 561, 629, 999, 1221, 1359, 1661, 1683, 1887, 2567, 3663, 4077, 4983, 5049, 5587, 5661, 6919, 7701, 10989, 14949, 16761, 16983, 20757, 23103, 28237, 44847, 50283, 61457, 62271, 69309, 84711, 94979, 150849, 184371, 186813, 254133, 284937, 553113, 762399, 854811, 1044769, 1659339, 2564433, 3134307, 9402921, 28208763]

約数ペア:

[(1, 28208763), (3, 9402921), (9, 3134307), (11, 2564433), (17, 1659339), (27, 1044769), (33, 854811), (37, 762399), (51, 553113), (99, 284937), (111, 254133), (151, 186813), (153, 184371), (187, 150849), (297, 94979), (333, 84711), (407, 69309), (453, 62271), (459, 61457), (561, 50283), (629, 44847), (999, 28237), (1221, 23103), (1359, 20757), (1661, 16983), (1683, 16761), (1887, 14949), (2567, 10989), (3663, 7701), (4077, 6919), (4983, 5661), (5049, 5587)]