21111952

素因数分解:

$2^4\times {\mathrm{811}}^1\times {\mathrm{1627}}^1$

素因数の和:2446

約数の個数: 20

約数和(自身を含む): 40980016

約数和(自身を除く): 19868064

約数列:

[1, 2, 4, 8, 16, 811, 1622, 1627, 3244, 3254, 6488, 6508, 12976, 13016, 26032, 1319497, 2638994, 5277988, 10555976, 21111952]

約数ペア:

[(1, 21111952), (2, 10555976), (4, 5277988), (8, 2638994), (16, 1319497), (811, 26032), (1622, 13016), (1627, 12976), (3244, 6508), (3254, 6488)]