21221242

素因数分解:

$2^1\times 7^1\times {\mathrm{677}}^1\times {\mathrm{2239}}^1$

素因数の和:2925

約数の個数: 16

約数和(自身を含む): 36449280

約数和(自身を除く): 15228038

約数列:

[1, 2, 7, 14, 677, 1354, 2239, 4478, 4739, 9478, 15673, 31346, 1515803, 3031606, 10610621, 21221242]

約数ペア:

[(1, 21221242), (2, 10610621), (7, 3031606), (14, 1515803), (677, 31346), (1354, 15673), (2239, 9478), (4478, 4739)]