20905183

素因数分解:

${\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{139}}^1\times {\mathrm{503}}^1$

素因数の和:678

約数の個数: 16

約数和(自身を含む): 23708160

約数和(自身を除く): 2802977

約数列:

[1, 13, 23, 139, 299, 503, 1807, 3197, 6539, 11569, 41561, 69917, 150397, 908921, 1608091, 20905183]

約数ペア:

[(1, 20905183), (13, 1608091), (23, 908921), (139, 150397), (299, 69917), (503, 41561), (1807, 11569), (3197, 6539)]