21007863

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1321}}^1$

素因数の和:1380

約数の個数: 32

約数和(自身を含む): 33843200

約数和(自身を除く): 12835337

約数列:

[1, 3, 9, 19, 27, 31, 57, 93, 171, 279, 513, 589, 837, 1321, 1767, 3963, 5301, 11889, 15903, 25099, 35667, 40951, 75297, 122853, 225891, 368559, 677673, 778069, 1105677, 2334207, 7002621, 21007863]

約数ペア:

[(1, 21007863), (3, 7002621), (9, 2334207), (19, 1105677), (27, 778069), (31, 677673), (57, 368559), (93, 225891), (171, 122853), (279, 75297), (513, 40951), (589, 35667), (837, 25099), (1321, 15903), (1767, 11889), (3963, 5301)]