57806721

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{6899}}^1$

素因数の和:6938

約数の個数: 36

約数和(自身を含む): 102258000

約数和(自身を除く): 44451279

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 931, 1197, 2793, 6899, 8379, 20697, 48293, 62091, 131081, 144879, 338051, 393243, 434637, 917567, 1014153, 1179729, 2752701, 3042459, 6422969, 8258103, 19268907, 57806721]

約数ペア:

[(1, 57806721), (3, 19268907), (7, 8258103), (9, 6422969), (19, 3042459), (21, 2752701), (49, 1179729), (57, 1014153), (63, 917567), (133, 434637), (147, 393243), (171, 338051), (399, 144879), (441, 131081), (931, 62091), (1197, 48293), (2793, 20697), (6899, 8379)]