20785215

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{5477}}^1$

素因数の和:5519

約数の個数: 32

約数和(自身を含む): 37863936

約数和(自身を除く): 17078721

約数列:

[1, 3, 5, 11, 15, 23, 33, 55, 69, 115, 165, 253, 345, 759, 1265, 3795, 5477, 16431, 27385, 60247, 82155, 125971, 180741, 301235, 377913, 629855, 903705, 1385681, 1889565, 4157043, 6928405, 20785215]

約数ペア:

[(1, 20785215), (3, 6928405), (5, 4157043), (11, 1889565), (15, 1385681), (23, 903705), (33, 629855), (55, 377913), (69, 301235), (115, 180741), (165, 125971), (253, 82155), (345, 60247), (759, 27385), (1265, 16431), (3795, 5477)]