20440511

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 27151488

約数和(自身を除く): 6710977

約数列:

[1, 7, 13, 17, 73, 91, 119, 181, 221, 511, 949, 1241, 1267, 1547, 2353, 3077, 6643, 8687, 13213, 16133, 16471, 21539, 40001, 92491, 112931, 171769, 224621, 280007, 1202383, 1572347, 2920073, 20440511]

約数ペア:

[(1, 20440511), (7, 2920073), (13, 1572347), (17, 1202383), (73, 280007), (91, 224621), (119, 171769), (181, 112931), (221, 92491), (511, 40001), (949, 21539), (1241, 16471), (1267, 16133), (1547, 13213), (2353, 8687), (3077, 6643)]