20967639

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{12967}}^1$

素因数の和:12995

約数の個数: 24

約数和(自身を含む): 35480448

約数和(自身を除く): 14512809

約数列:

[1, 3, 7, 11, 21, 33, 49, 77, 147, 231, 539, 1617, 12967, 38901, 90769, 142637, 272307, 427911, 635383, 998459, 1906149, 2995377, 6989213, 20967639]

約数ペア:

[(1, 20967639), (3, 6989213), (7, 2995377), (11, 1906149), (21, 998459), (33, 635383), (49, 427911), (77, 272307), (147, 142637), (231, 90769), (539, 38901), (1617, 12967)]