20642810

素因数分解:

$2^1\times 5^1\times {\mathrm{523}}^1\times {\mathrm{3947}}^1$

素因数の和:4477

約数の個数: 16

約数和(自身を含む): 37237536

約数和(自身を除く): 16594726

約数列:

[1, 2, 5, 10, 523, 1046, 2615, 3947, 5230, 7894, 19735, 39470, 2064281, 4128562, 10321405, 20642810]

約数ペア:

[(1, 20642810), (2, 10321405), (5, 4128562), (10, 2064281), (523, 39470), (1046, 19735), (2615, 7894), (3947, 5230)]