28233639

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{229}}^1$

素因数の和:364

約数の個数: 48

約数和(自身を含む): 49753600

約数和(自身を除く): 21519961

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 103, 133, 171, 229, 309, 399, 687, 721, 927, 1197, 1603, 1957, 2061, 2163, 4351, 4809, 5871, 6489, 13053, 13699, 14427, 17613, 23587, 30457, 39159, 41097, 70761, 91371, 123291, 165109, 212283, 274113, 448153, 495327, 1344459, 1485981, 3137071, 4033377, 9411213, 28233639]

約数ペア:

[(1, 28233639), (3, 9411213), (7, 4033377), (9, 3137071), (19, 1485981), (21, 1344459), (57, 495327), (63, 448153), (103, 274113), (133, 212283), (171, 165109), (229, 123291), (309, 91371), (399, 70761), (687, 41097), (721, 39159), (927, 30457), (1197, 23587), (1603, 17613), (1957, 14427), (2061, 13699), (2163, 13053), (4351, 6489), (4809, 5871)]