20871730

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{189743}}^1$

素因数の和:189761

約数の個数: 16

約数和(自身を含む): 40984704

約数和(自身を除く): 20112974

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 189743, 379486, 948715, 1897430, 2087173, 4174346, 10435865, 20871730]

約数ペア:

[(1, 20871730), (2, 10435865), (5, 4174346), (10, 2087173), (11, 1897430), (22, 948715), (55, 379486), (110, 189743)]