21811461

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{19597}}^1$

素因数の和:19660

約数の個数: 16

約数和(自身を含む): 33865344

約数和(自身を除く): 12053883

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 19597, 58791, 137179, 411537, 1038641, 3115923, 7270487, 21811461]

約数ペア:

[(1, 21811461), (3, 7270487), (7, 3115923), (21, 1038641), (53, 411537), (159, 137179), (371, 58791), (1113, 19597)]