20489710

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{15641}}^1$

素因数の和:15779

約数の個数: 16

約数和(自身を含む): 37165392

約数和(自身を除く): 16675682

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 15641, 31282, 78205, 156410, 2048971, 4097942, 10244855, 20489710]

約数ペア:

[(1, 20489710), (2, 10244855), (5, 4097942), (10, 2048971), (131, 156410), (262, 78205), (655, 31282), (1310, 15641)]