21804016

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104827}}^1$

素因数の和:104848

約数の個数: 20

約数和(自身を含む): 45495352

約数和(自身を除く): 23691336

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104827, 209654, 419308, 838616, 1362751, 1677232, 2725502, 5451004, 10902008, 21804016]

約数ペア:

[(1, 21804016), (2, 10902008), (4, 5451004), (8, 2725502), (13, 1677232), (16, 1362751), (26, 838616), (52, 419308), (104, 209654), (208, 104827)]