21535479

素因数分解:

$3^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4327}}^1$

素因数の和:4419

約数の個数: 24

約数和(自身を含む): 36008960

約数和(自身を除く): 14473481

約数列:

[1, 3, 7, 9, 21, 63, 79, 237, 553, 711, 1659, 4327, 4977, 12981, 30289, 38943, 90867, 272601, 341833, 1025499, 2392831, 3076497, 7178493, 21535479]

約数ペア:

[(1, 21535479), (3, 7178493), (7, 3076497), (9, 2392831), (21, 1025499), (63, 341833), (79, 272601), (237, 90867), (553, 38943), (711, 30289), (1659, 12981), (4327, 4977)]