20865838

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1669}}^1$

素因数の和:1744

約数の個数: 32

約数和(自身を含む): 38476800

約数和(自身を除く): 17610962

約数列:

[1, 2, 7, 14, 19, 38, 47, 94, 133, 266, 329, 658, 893, 1669, 1786, 3338, 6251, 11683, 12502, 23366, 31711, 63422, 78443, 156886, 221977, 443954, 549101, 1098202, 1490417, 2980834, 10432919, 20865838]

約数ペア:

[(1, 20865838), (2, 10432919), (7, 2980834), (14, 1490417), (19, 1098202), (38, 549101), (47, 443954), (94, 221977), (133, 156886), (266, 78443), (329, 63422), (658, 31711), (893, 23366), (1669, 12502), (1786, 11683), (3338, 6251)]