19977993

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{4733}}^1$

素因数の和:4813

約数の個数: 24

約数和(自身を含む): 33478848

約数和(自身を除く): 13500855

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 4733, 14199, 33131, 42597, 99393, 298179, 317111, 951333, 2219777, 2853999, 6659331, 19977993]

約数ペア:

[(1, 19977993), (3, 6659331), (7, 2853999), (9, 2219777), (21, 951333), (63, 317111), (67, 298179), (201, 99393), (469, 42597), (603, 33131), (1407, 14199), (4221, 4733)]