1621425

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{1663}}^1$

素因数の和:1689

約数の個数: 24

約数和(自身を含む): 2888704

約数和(自身を除く): 1267279

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 1663, 4989, 8315, 21619, 24945, 41575, 64857, 108095, 124725, 324285, 540475, 1621425]

約数ペア:

[(1, 1621425), (3, 540475), (5, 324285), (13, 124725), (15, 108095), (25, 64857), (39, 41575), (65, 24945), (75, 21619), (195, 8315), (325, 4989), (975, 1663)]