20681318

素因数分解:

$2^1\times 7^1\times {\mathrm{61}}^2\times {\mathrm{397}}^1$

素因数の和:528

約数の個数: 24

約数和(自身を含む): 36135216

約数和(自身を除く): 15453898

約数列:

[1, 2, 7, 14, 61, 122, 397, 427, 794, 854, 2779, 3721, 5558, 7442, 24217, 26047, 48434, 52094, 169519, 339038, 1477237, 2954474, 10340659, 20681318]

約数ペア:

[(1, 20681318), (2, 10340659), (7, 2954474), (14, 1477237), (61, 339038), (122, 169519), (397, 52094), (427, 48434), (794, 26047), (854, 24217), (2779, 7442), (3721, 5558)]