21910257

素因数分解:

$3^4\times {\mathrm{83}}^1\times {\mathrm{3259}}^1$

素因数の和:3354

約数の個数: 20

約数和(自身を含む): 33134640

約数和(自身を除く): 11224383

約数列:

[1, 3, 9, 27, 81, 83, 249, 747, 2241, 3259, 6723, 9777, 29331, 87993, 263979, 270497, 811491, 2434473, 7303419, 21910257]

約数ペア:

[(1, 21910257), (3, 7303419), (9, 2434473), (27, 811491), (81, 270497), (83, 263979), (249, 87993), (747, 29331), (2241, 9777), (3259, 6723)]