19517264

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{911}}^1$

素因数の和:1035

約数の個数: 40

約数和(自身を含む): 41164032

約数和(自身を除く): 21646768

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 103, 104, 206, 208, 412, 824, 911, 1339, 1648, 1822, 2678, 3644, 5356, 7288, 10712, 11843, 14576, 21424, 23686, 47372, 93833, 94744, 187666, 189488, 375332, 750664, 1219829, 1501328, 2439658, 4879316, 9758632, 19517264]

約数ペア:

[(1, 19517264), (2, 9758632), (4, 4879316), (8, 2439658), (13, 1501328), (16, 1219829), (26, 750664), (52, 375332), (103, 189488), (104, 187666), (206, 94744), (208, 93833), (412, 47372), (824, 23686), (911, 21424), (1339, 14576), (1648, 11843), (1822, 10712), (2678, 7288), (3644, 5356)]