221640507

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{173}}^1\times {\mathrm{12941}}^1$

素因数の和:13131

約数の個数: 24

約数和(自身を含む): 351297648

約数和(自身を除く): 129657141

約数列:

[1, 3, 9, 11, 33, 99, 173, 519, 1557, 1903, 5709, 12941, 17127, 38823, 116469, 142351, 427053, 1281159, 2238793, 6716379, 20149137, 24626723, 73880169, 221640507]

約数ペア:

[(1, 221640507), (3, 73880169), (9, 24626723), (11, 20149137), (33, 6716379), (99, 2238793), (173, 1281159), (519, 427053), (1557, 142351), (1903, 116469), (5709, 38823), (12941, 17127)]