21000886190

素因数分解:

$2^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{5134691}}^1$

素因数の和:5135107

約数の個数: 16

約数和(自身を含む): 37894026960

約数和(自身を除く): 16893140770

約数列:

[1, 2, 5, 10, 409, 818, 2045, 4090, 5134691, 10269382, 25673455, 51346910, 2100088619, 4200177238, 10500443095, 21000886190]

約数ペア:

[(1, 21000886190), (2, 10500443095), (5, 4200177238), (10, 2100088619), (409, 51346910), (818, 25673455), (2045, 10269382), (4090, 5134691)]