20855978

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{72923}}^1$

素因数の和:72949

約数の個数: 16

約数和(自身を含む): 36753696

約数和(自身を除く): 15897718

約数列:

[1, 2, 11, 13, 22, 26, 143, 286, 72923, 145846, 802153, 947999, 1604306, 1895998, 10427989, 20855978]

約数ペア:

[(1, 20855978), (2, 10427989), (11, 1895998), (13, 1604306), (22, 947999), (26, 802153), (143, 145846), (286, 72923)]