21409232

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102929}}^1$

素因数の和:102950

約数の個数: 20

約数和(自身を含む): 44671620

約数和(自身を除く): 23262388

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102929, 205858, 411716, 823432, 1338077, 1646864, 2676154, 5352308, 10704616, 21409232]

約数ペア:

[(1, 21409232), (2, 10704616), (4, 5352308), (8, 2676154), (13, 1646864), (16, 1338077), (26, 823432), (52, 411716), (104, 205858), (208, 102929)]