21407031

素因数分解:

$3^3\times {\mathrm{73}}^1\times {\mathrm{10861}}^1$

素因数の和:10943

約数の個数: 16

約数和(自身を含む): 32151520

約数和(自身を除く): 10744489

約数列:

[1, 3, 9, 27, 73, 219, 657, 1971, 10861, 32583, 97749, 293247, 792853, 2378559, 7135677, 21407031]

約数ペア:

[(1, 21407031), (3, 7135677), (9, 2378559), (27, 792853), (73, 293247), (219, 97749), (657, 32583), (1971, 10861)]