1639491

素因数分解:

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

素因数の和:623

約数の個数: 24

約数和(自身を含む): 2681280

約数和(自身を除く): 1041789

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 399, 587, 931, 1761, 2793, 4109, 11153, 12327, 28763, 33459, 78071, 86289, 234213, 546497, 1639491]

約数ペア:

[(1, 1639491), (3, 546497), (7, 234213), (19, 86289), (21, 78071), (49, 33459), (57, 28763), (133, 12327), (147, 11153), (399, 4109), (587, 2793), (931, 1761)]