21428475

素因数分解:

$3^1\times 5^2\times {\mathrm{47}}^1\times {\mathrm{6079}}^1$

素因数の和:6139

約数の個数: 24

約数和(自身を含む): 36188160

約数和(自身を除く): 14759685

約数列:

[1, 3, 5, 15, 25, 47, 75, 141, 235, 705, 1175, 3525, 6079, 18237, 30395, 91185, 151975, 285713, 455925, 857139, 1428565, 4285695, 7142825, 21428475]

約数ペア:

[(1, 21428475), (3, 7142825), (5, 4285695), (15, 1428565), (25, 857139), (47, 455925), (75, 285713), (141, 151975), (235, 91185), (705, 30395), (1175, 18237), (3525, 6079)]