16681221

素因数分解:

$3^5\times {\mathrm{19}}^1\times {\mathrm{3613}}^1$

素因数の和:3647

約数の個数: 24

約数和(自身を含む): 26309920

約数和(自身を除く): 9628699

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 1539, 3613, 4617, 10839, 32517, 68647, 97551, 205941, 292653, 617823, 877959, 1853469, 5560407, 16681221]

約数ペア:

[(1, 16681221), (3, 5560407), (9, 1853469), (19, 877959), (27, 617823), (57, 292653), (81, 205941), (171, 97551), (243, 68647), (513, 32517), (1539, 10839), (3613, 4617)]