21047930

素因数分解:

$2^1\times 5^1\times {\mathrm{677}}^1\times {\mathrm{3109}}^1$

素因数の和:3793

約数の個数: 16

約数和(自身を含む): 37954440

約数和(自身を除く): 16906510

約数列:

[1, 2, 5, 10, 677, 1354, 3109, 3385, 6218, 6770, 15545, 31090, 2104793, 4209586, 10523965, 21047930]

約数ペア:

[(1, 21047930), (2, 10523965), (5, 4209586), (10, 2104793), (677, 31090), (1354, 15545), (3109, 6770), (3385, 6218)]