21313383

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{587}}^1$

素因数の和:636

約数の個数: 48

約数和(自身を含む): 37537920

約数和(自身を除く): 16224537

約数列:

[1, 3, 7, 13, 19, 21, 39, 49, 57, 91, 133, 147, 247, 273, 399, 587, 637, 741, 931, 1729, 1761, 1911, 2793, 4109, 5187, 7631, 11153, 12103, 12327, 22893, 28763, 33459, 36309, 53417, 78071, 86289, 144989, 160251, 234213, 373919, 434967, 546497, 1014923, 1121757, 1639491, 3044769, 7104461, 21313383]

約数ペア:

[(1, 21313383), (3, 7104461), (7, 3044769), (13, 1639491), (19, 1121757), (21, 1014923), (39, 546497), (49, 434967), (57, 373919), (91, 234213), (133, 160251), (147, 144989), (247, 86289), (273, 78071), (399, 53417), (587, 36309), (637, 33459), (741, 28763), (931, 22893), (1729, 12327), (1761, 12103), (1911, 11153), (2793, 7631), (4109, 5187)]