27420981

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{347}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 43296768

約数和(自身を除く): 15875787

約数列:

[1, 3, 7, 21, 53, 71, 159, 213, 347, 371, 497, 1041, 1113, 1491, 2429, 3763, 7287, 11289, 18391, 24637, 26341, 55173, 73911, 79023, 128737, 172459, 386211, 517377, 1305761, 3917283, 9140327, 27420981]

約数ペア:

[(1, 27420981), (3, 9140327), (7, 3917283), (21, 1305761), (53, 517377), (71, 386211), (159, 172459), (213, 128737), (347, 79023), (371, 73911), (497, 55173), (1041, 26341), (1113, 24637), (1491, 18391), (2429, 11289), (3763, 7287)]