216813289

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{9811}}^1$

素因数の和:9877

約数の個数: 24

約数和(自身を含む): 281879136

約数和(自身を除く): 65065847

約数列:

[1, 7, 11, 41, 49, 77, 287, 451, 539, 2009, 3157, 9811, 22099, 68677, 107921, 402251, 480739, 755447, 2815757, 4424761, 5288129, 19710299, 30973327, 216813289]

約数ペア:

[(1, 216813289), (7, 30973327), (11, 19710299), (41, 5288129), (49, 4424761), (77, 2815757), (287, 755447), (451, 480739), (539, 402251), (2009, 107921), (3157, 68677), (9811, 22099)]