21815686

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{3853}}^1$

素因数の和:4023

約数の個数: 16

約数和(自身を含む): 34686000

約数和(自身を除く): 12870314

約数列:

[1, 2, 19, 38, 149, 298, 2831, 3853, 5662, 7706, 73207, 146414, 574097, 1148194, 10907843, 21815686]

約数ペア:

[(1, 21815686), (2, 10907843), (19, 1148194), (38, 574097), (149, 146414), (298, 73207), (2831, 7706), (3853, 5662)]