20905833

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{317}}^1$

素因数の和:441

約数の個数: 32

約数和(自身を含む): 32054400

約数和(自身を除く): 11148567

約数列:

[1, 3, 13, 19, 39, 57, 89, 247, 267, 317, 741, 951, 1157, 1691, 3471, 4121, 5073, 6023, 12363, 18069, 21983, 28213, 65949, 78299, 84639, 234897, 366769, 536047, 1100307, 1608141, 6968611, 20905833]

約数ペア:

[(1, 20905833), (3, 6968611), (13, 1608141), (19, 1100307), (39, 536047), (57, 366769), (89, 234897), (247, 84639), (267, 78299), (317, 65949), (741, 28213), (951, 21983), (1157, 18069), (1691, 12363), (3471, 6023), (4121, 5073)]