19784144

素因数分解:

$2^4\times {\mathrm{131}}^1\times {\mathrm{9439}}^1$

素因数の和:9578

約数の個数: 20

約数和(自身を含む): 38628480

約数和(自身を除く): 18844336

約数列:

[1, 2, 4, 8, 16, 131, 262, 524, 1048, 2096, 9439, 18878, 37756, 75512, 151024, 1236509, 2473018, 4946036, 9892072, 19784144]

約数ペア:

[(1, 19784144), (2, 9892072), (4, 4946036), (8, 2473018), (16, 1236509), (131, 151024), (262, 75512), (524, 37756), (1048, 18878), (2096, 9439)]