1639664

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{7883}}^1$

素因数の和:7904

約数の個数: 20

約数和(自身を含む): 3421656

約数和(自身を除く): 1781992

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 7883, 15766, 31532, 63064, 102479, 126128, 204958, 409916, 819832, 1639664]

約数ペア:

[(1, 1639664), (2, 819832), (4, 409916), (8, 204958), (13, 126128), (16, 102479), (26, 63064), (52, 31532), (104, 15766), (208, 7883)]