28181811

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{4079}}^1$

素因数の和:4143

約数の個数: 24

約数和(自身を含む): 44651520

約数和(自身を除く): 16469709

約数列:

[1, 3, 7, 21, 47, 49, 141, 147, 329, 987, 2303, 4079, 6909, 12237, 28553, 85659, 191713, 199871, 575139, 599613, 1341991, 4025973, 9393937, 28181811]

約数ペア:

[(1, 28181811), (3, 9393937), (7, 4025973), (21, 1341991), (47, 599613), (49, 575139), (141, 199871), (147, 191713), (329, 85659), (987, 28553), (2303, 12237), (4079, 6909)]