19689995

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1\times {\mathrm{173}}^1$

素因数の和:311

約数の個数: 32

約数和(自身を含む): 27361152

約数和(自身を除く): 7671157

約数列:

[1, 5, 13, 17, 65, 85, 103, 173, 221, 515, 865, 1105, 1339, 1751, 2249, 2941, 6695, 8755, 11245, 14705, 17819, 22763, 38233, 89095, 113815, 191165, 231647, 302923, 1158235, 1514615, 3937999, 19689995]

約数ペア:

[(1, 19689995), (5, 3937999), (13, 1514615), (17, 1158235), (65, 302923), (85, 231647), (103, 191165), (173, 113815), (221, 89095), (515, 38233), (865, 22763), (1105, 17819), (1339, 14705), (1751, 11245), (2249, 8755), (2941, 6695)]