21051333

素因数分解:

$3^6\times {\mathrm{67}}^1\times {\mathrm{431}}^1$

素因数の和:516

約数の個数: 28

約数和(自身を含む): 32107968

約数和(自身を除く): 11056635

約数列:

[1, 3, 9, 27, 67, 81, 201, 243, 431, 603, 729, 1293, 1809, 3879, 5427, 11637, 16281, 28877, 34911, 48843, 86631, 104733, 259893, 314199, 779679, 2339037, 7017111, 21051333]

約数ペア:

[(1, 21051333), (3, 7017111), (9, 2339037), (27, 779679), (67, 314199), (81, 259893), (201, 104733), (243, 86631), (431, 48843), (603, 34911), (729, 28877), (1293, 16281), (1809, 11637), (3879, 5427)]