21435268

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{2153}}^1$

素因数の和:2307

約数の個数: 24

約数和(自身を含む): 39805920

約数和(自身を除く): 18370652

約数列:

[1, 2, 4, 19, 38, 76, 131, 262, 524, 2153, 2489, 4306, 4978, 8612, 9956, 40907, 81814, 163628, 282043, 564086, 1128172, 5358817, 10717634, 21435268]

約数ペア:

[(1, 21435268), (2, 10717634), (4, 5358817), (19, 1128172), (38, 564086), (76, 282043), (131, 163628), (262, 81814), (524, 40907), (2153, 9956), (2489, 8612), (4306, 4978)]