20978202

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{499481}}^1$

素因数の和:499493

約数の個数: 16

約数和(自身を含む): 47950272

約数和(自身を除く): 26972070

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 499481, 998962, 1498443, 2996886, 3496367, 6992734, 10489101, 20978202]

約数ペア:

[(1, 20978202), (2, 10489101), (3, 6992734), (6, 3496367), (7, 2996886), (14, 1498443), (21, 998962), (42, 499481)]