18929872

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{91009}}^1$

素因数の和:91030

約数の個数: 20

約数和(自身を含む): 39498340

約数和(自身を除く): 20568468

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 91009, 182018, 364036, 728072, 1183117, 1456144, 2366234, 4732468, 9464936, 18929872]

約数ペア:

[(1, 18929872), (2, 9464936), (4, 4732468), (8, 2366234), (13, 1456144), (16, 1183117), (26, 728072), (52, 364036), (104, 182018), (208, 91009)]