28503009

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{7487}}^1$

素因数の和:7546

約数の個数: 20

約数和(自身を含む): 43490304

約数和(自身を除く): 14987295

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 7487, 22461, 67383, 202149, 351889, 606447, 1055667, 3167001, 9501003, 28503009]

約数ペア:

[(1, 28503009), (3, 9501003), (9, 3167001), (27, 1055667), (47, 606447), (81, 351889), (141, 202149), (423, 67383), (1269, 22461), (3807, 7487)]