21202095

素因数分解:

$3^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{2713}}^1$

素因数の和:3242

約数の個数: 16

約数和(自身を含む): 34000992

約数和(自身を除く): 12798897

約数列:

[1, 3, 5, 15, 521, 1563, 2605, 2713, 7815, 8139, 13565, 40695, 1413473, 4240419, 7067365, 21202095]

約数ペア:

[(1, 21202095), (3, 7067365), (5, 4240419), (15, 1413473), (521, 40695), (1563, 13565), (2605, 8139), (2713, 7815)]