20452970

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{28807}}^1$

素因数の和:28885

約数の個数: 16

約数和(自身を含む): 37335168

約数和(自身を除く): 16882198

約数列:

[1, 2, 5, 10, 71, 142, 355, 710, 28807, 57614, 144035, 288070, 2045297, 4090594, 10226485, 20452970]

約数ペア:

[(1, 20452970), (2, 10226485), (5, 4090594), (10, 2045297), (71, 288070), (142, 144035), (355, 57614), (710, 28807)]