5421213

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{647}}^1$

素因数の和:686

約数の個数: 36

約数和(自身を含む): 9603360

約数和(自身を除く): 4182147

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 647, 931, 1197, 1941, 2793, 4529, 5823, 8379, 12293, 13587, 31703, 36879, 40761, 86051, 95109, 110637, 258153, 285327, 602357, 774459, 1807071, 5421213]

約数ペア:

[(1, 5421213), (3, 1807071), (7, 774459), (9, 602357), (19, 285327), (21, 258153), (49, 110637), (57, 95109), (63, 86051), (133, 40761), (147, 36879), (171, 31703), (399, 13587), (441, 12293), (647, 8379), (931, 5823), (1197, 4529), (1941, 2793)]