20494719

素因数分解:

$3^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{5333}}^1$

素因数の和:5407

約数の個数: 24

約数和(自身を含む): 34393632

約数和(自身を除く): 13898913

約数列:

[1, 3, 7, 9, 21, 61, 63, 183, 427, 549, 1281, 3843, 5333, 15999, 37331, 47997, 111993, 325313, 335979, 975939, 2277191, 2927817, 6831573, 20494719]

約数ペア:

[(1, 20494719), (3, 6831573), (7, 2927817), (9, 2277191), (21, 975939), (61, 335979), (63, 325313), (183, 111993), (427, 47997), (549, 37331), (1281, 15999), (3843, 5333)]