19428890

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1451}}^1$

素因数の和:1574

約数の個数: 32

約数和(自身を含む): 38054016

約数和(自身を除く): 18625126

約数列:

[1, 2, 5, 10, 13, 26, 65, 103, 130, 206, 515, 1030, 1339, 1451, 2678, 2902, 6695, 7255, 13390, 14510, 18863, 37726, 94315, 149453, 188630, 298906, 747265, 1494530, 1942889, 3885778, 9714445, 19428890]

約数ペア:

[(1, 19428890), (2, 9714445), (5, 3885778), (10, 1942889), (13, 1494530), (26, 747265), (65, 298906), (103, 188630), (130, 149453), (206, 94315), (515, 37726), (1030, 18863), (1339, 14510), (1451, 13390), (2678, 7255), (2902, 6695)]