20257678

素因数分解:

$2^1\times 7^2\times {\mathrm{421}}^1\times {\mathrm{491}}^1$

素因数の和:928

約数の個数: 24

約数和(自身を含む): 35503704

約数和(自身を除く): 15246026

約数列:

[1, 2, 7, 14, 49, 98, 421, 491, 842, 982, 2947, 3437, 5894, 6874, 20629, 24059, 41258, 48118, 206711, 413422, 1446977, 2893954, 10128839, 20257678]

約数ペア:

[(1, 20257678), (2, 10128839), (7, 2893954), (14, 1446977), (49, 413422), (98, 206711), (421, 48118), (491, 41258), (842, 24059), (982, 20629), (2947, 6874), (3437, 5894)]