18743425

素因数分解:

$5^2\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{251}}^1$

素因数の和:393

約数の個数: 24

約数和(自身を含む): 24373440

約数和(自身を除く): 5630015

約数列:

[1, 5, 25, 29, 103, 145, 251, 515, 725, 1255, 2575, 2987, 6275, 7279, 14935, 25853, 36395, 74675, 129265, 181975, 646325, 749737, 3748685, 18743425]

約数ペア:

[(1, 18743425), (5, 3748685), (25, 749737), (29, 646325), (103, 181975), (145, 129265), (251, 74675), (515, 36395), (725, 25853), (1255, 14935), (2575, 7279), (2987, 6275)]