21986237

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{673}}^1$

素因数の和:1052

約数の個数: 16

約数和(自身を含む): 27175680

約数和(自身を除く): 5189443

約数列:

[1, 7, 13, 91, 359, 673, 2513, 4667, 4711, 8749, 32669, 61243, 241607, 1691249, 3140891, 21986237]

約数ペア:

[(1, 21986237), (7, 3140891), (13, 1691249), (91, 241607), (359, 61243), (673, 32669), (2513, 8749), (4667, 4711)]