18961997391

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{1545773}}^1$

素因数の和:1545855

約数の個数: 24

約数和(自身を含む): 28936889280

約数和(自身を除く): 9974891889

約数列:

[1, 3, 9, 29, 47, 87, 141, 261, 423, 1363, 4089, 12267, 1545773, 4637319, 13911957, 44827417, 72651331, 134482251, 217953993, 403446753, 653861979, 2106888599, 6320665797, 18961997391]

約数ペア:

[(1, 18961997391), (3, 6320665797), (9, 2106888599), (29, 653861979), (47, 403446753), (87, 217953993), (141, 134482251), (261, 72651331), (423, 44827417), (1363, 13911957), (4089, 4637319), (12267, 1545773)]