21329343

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{173}}^1$

素因数の和:308

約数の個数: 48

約数和(自身を含む): 37639680

約数和(自身を除く): 16310337

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 103, 133, 171, 173, 309, 399, 519, 721, 927, 1197, 1211, 1557, 1957, 2163, 3287, 3633, 5871, 6489, 9861, 10899, 13699, 17613, 17819, 23009, 29583, 41097, 53457, 69027, 123291, 124733, 160371, 207081, 338561, 374199, 1015683, 1122597, 2369927, 3047049, 7109781, 21329343]

約数ペア:

[(1, 21329343), (3, 7109781), (7, 3047049), (9, 2369927), (19, 1122597), (21, 1015683), (57, 374199), (63, 338561), (103, 207081), (133, 160371), (171, 124733), (173, 123291), (309, 69027), (399, 53457), (519, 41097), (721, 29583), (927, 23009), (1197, 17819), (1211, 17613), (1557, 13699), (1957, 10899), (2163, 9861), (3287, 6489), (3633, 5871)]