21486285

素因数分解:

$3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{10159}}^1$

素因数の和:10217

約数の個数: 24

約数和(自身を含む): 38039040

約数和(自身を除く): 16552755

約数列:

[1, 3, 5, 9, 15, 45, 47, 141, 235, 423, 705, 2115, 10159, 30477, 50795, 91431, 152385, 457155, 477473, 1432419, 2387365, 4297257, 7162095, 21486285]

約数ペア:

[(1, 21486285), (3, 7162095), (5, 4297257), (9, 2387365), (15, 1432419), (45, 477473), (47, 457155), (141, 152385), (235, 91431), (423, 50795), (705, 30477), (2115, 10159)]