20312816

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{17881}}^1$

素因数の和:17960

約数の個数: 20

約数和(自身を含む): 39912624

約数和(自身を除く): 19599808

約数列:

[1, 2, 4, 8, 16, 71, 142, 284, 568, 1136, 17881, 35762, 71524, 143048, 286096, 1269551, 2539102, 5078204, 10156408, 20312816]

約数ペア:

[(1, 20312816), (2, 10156408), (4, 5078204), (8, 2539102), (16, 1269551), (71, 286096), (142, 143048), (284, 71524), (568, 35762), (1136, 17881)]