399252567

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{7879}}^1$

素因数の和:8035

約数の個数: 32

約数和(自身を含む): 645529600

約数和(自身を除く): 246277033

約数列:

[1, 3, 7, 19, 21, 57, 127, 133, 381, 399, 889, 2413, 2667, 7239, 7879, 16891, 23637, 50673, 55153, 149701, 165459, 449103, 1000633, 1047907, 3001899, 3143721, 7004431, 19012027, 21013293, 57036081, 133084189, 399252567]

約数ペア:

[(1, 399252567), (3, 133084189), (7, 57036081), (19, 21013293), (21, 19012027), (57, 7004431), (127, 3143721), (133, 3001899), (381, 1047907), (399, 1000633), (889, 449103), (2413, 165459), (2667, 149701), (7239, 55153), (7879, 50673), (16891, 23637)]