19664271

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{307}}^1\times {\mathrm{647}}^1$

素因数の和:971

約数の個数: 24

約数和(自身を含む): 31135104

約数和(自身を除く): 11470833

約数列:

[1, 3, 9, 11, 33, 99, 307, 647, 921, 1941, 2763, 3377, 5823, 7117, 10131, 21351, 30393, 64053, 198629, 595887, 1787661, 2184919, 6554757, 19664271]

約数ペア:

[(1, 19664271), (3, 6554757), (9, 2184919), (11, 1787661), (33, 595887), (99, 198629), (307, 64053), (647, 30393), (921, 21351), (1941, 10131), (2763, 7117), (3377, 5823)]