20821486

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{64663}}^1$

素因数の和:64695

約数の個数: 16

約数和(自身を含む): 37246464

約数和(自身を除く): 16424978

約数列:

[1, 2, 7, 14, 23, 46, 161, 322, 64663, 129326, 452641, 905282, 1487249, 2974498, 10410743, 20821486]

約数ペア:

[(1, 20821486), (2, 10410743), (7, 2974498), (14, 1487249), (23, 905282), (46, 452641), (161, 129326), (322, 64663)]