20875425

素因数分解:

$3^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{6473}}^1$

素因数の和:6529

約数の個数: 24

約数和(自身を含む): 35322144

約数和(自身を除く): 14446719

約数列:

[1, 3, 5, 15, 25, 43, 75, 129, 215, 645, 1075, 3225, 6473, 19419, 32365, 97095, 161825, 278339, 485475, 835017, 1391695, 4175085, 6958475, 20875425]

約数ペア:

[(1, 20875425), (3, 6958475), (5, 4175085), (15, 1391695), (25, 835017), (43, 485475), (75, 278339), (129, 161825), (215, 97095), (645, 32365), (1075, 19419), (3225, 6473)]