21305715

素因数分解:

$3^1\times 5^1\times {\mathrm{631}}^1\times {\mathrm{2251}}^1$

素因数の和:2890

約数の個数: 16

約数和(自身を含む): 34158336

約数和(自身を除く): 12852621

約数列:

[1, 3, 5, 15, 631, 1893, 2251, 3155, 6753, 9465, 11255, 33765, 1420381, 4261143, 7101905, 21305715]

約数ペア:

[(1, 21305715), (3, 7101905), (5, 4261143), (15, 1420381), (631, 33765), (1893, 11255), (2251, 9465), (3155, 6753)]