21021543

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{457}}^1$

素因数の和:751

約数の個数: 24

約数和(自身を含む): 32151600

約数和(自身を除く): 11130057

約数列:

[1, 3, 9, 19, 57, 171, 269, 457, 807, 1371, 2421, 4113, 5111, 8683, 15333, 26049, 45999, 78147, 122933, 368799, 1106397, 2335727, 7007181, 21021543]

約数ペア:

[(1, 21021543), (3, 7007181), (9, 2335727), (19, 1106397), (57, 368799), (171, 122933), (269, 78147), (457, 45999), (807, 26049), (1371, 15333), (2421, 8683), (4113, 5111)]