28256724

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{379}}^1$

素因数の和:517

約数の個数: 72

約数和(自身を含む): 76076000

約数和(自身を除く): 47819276

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 109, 114, 171, 218, 228, 327, 342, 379, 436, 654, 684, 758, 981, 1137, 1308, 1516, 1962, 2071, 2274, 3411, 3924, 4142, 4548, 6213, 6822, 7201, 8284, 12426, 13644, 14402, 18639, 21603, 24852, 28804, 37278, 41311, 43206, 64809, 74556, 82622, 86412, 123933, 129618, 165244, 247866, 259236, 371799, 495732, 743598, 784909, 1487196, 1569818, 2354727, 3139636, 4709454, 7064181, 9418908, 14128362, 28256724]

約数ペア:

[(1, 28256724), (2, 14128362), (3, 9418908), (4, 7064181), (6, 4709454), (9, 3139636), (12, 2354727), (18, 1569818), (19, 1487196), (36, 784909), (38, 743598), (57, 495732), (76, 371799), (109, 259236), (114, 247866), (171, 165244), (218, 129618), (228, 123933), (327, 86412), (342, 82622), (379, 74556), (436, 64809), (654, 43206), (684, 41311), (758, 37278), (981, 28804), (1137, 24852), (1308, 21603), (1516, 18639), (1962, 14402), (2071, 13644), (2274, 12426), (3411, 8284), (3924, 7201), (4142, 6822), (4548, 6213)]