21357232

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102679}}^1$

素因数の和:102700

約数の個数: 20

約数和(自身を含む): 44563120

約数和(自身を除く): 23205888

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102679, 205358, 410716, 821432, 1334827, 1642864, 2669654, 5339308, 10678616, 21357232]

約数ペア:

[(1, 21357232), (2, 10678616), (4, 5339308), (8, 2669654), (13, 1642864), (16, 1334827), (26, 821432), (52, 410716), (104, 205358), (208, 102679)]