18774945

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3137}}^1$

素因数の和:3174

約数の個数: 48

約数和(自身を含む): 39162240

約数和(自身を除く): 20387295

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3137, 5985, 9411, 15685, 21959, 28233, 47055, 59603, 65877, 109795, 141165, 178809, 197631, 298015, 329385, 417221, 536427, 894045, 988155, 1251663, 2086105, 2682135, 3754989, 6258315, 18774945]

約数ペア:

[(1, 18774945), (3, 6258315), (5, 3754989), (7, 2682135), (9, 2086105), (15, 1251663), (19, 988155), (21, 894045), (35, 536427), (45, 417221), (57, 329385), (63, 298015), (95, 197631), (105, 178809), (133, 141165), (171, 109795), (285, 65877), (315, 59603), (399, 47055), (665, 28233), (855, 21959), (1197, 15685), (1995, 9411), (3137, 5985)]