28777791

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{19301}}^1$

素因数の和:19382

約数の個数: 16

約数和(自身を含む): 44471808

約数和(自身を除く): 15694017

約数列:

[1, 3, 7, 21, 71, 213, 497, 1491, 19301, 57903, 135107, 405321, 1370371, 4111113, 9592597, 28777791]

約数ペア:

[(1, 28777791), (3, 9592597), (7, 4111113), (21, 1370371), (71, 405321), (213, 135107), (497, 57903), (1491, 19301)]