20687906

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1\times {\mathrm{1123}}^1$

素因数の和:1337

約数の個数: 16

約数和(自身を含む): 31777728

約数和(自身を除く): 11089822

約数列:

[1, 2, 61, 122, 151, 302, 1123, 2246, 9211, 18422, 68503, 137006, 169573, 339146, 10343953, 20687906]

約数ペア:

[(1, 20687906), (2, 10343953), (61, 339146), (122, 169573), (151, 137006), (302, 68503), (1123, 18422), (2246, 9211)]