28420889

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1\times {\mathrm{991}}^1$

素因数の和:1256

約数の個数: 16

約数和(自身を含む): 34569216

約数和(自身を除く): 6148327

約数列:

[1, 7, 17, 119, 241, 991, 1687, 4097, 6937, 16847, 28679, 117929, 238831, 1671817, 4060127, 28420889]

約数ペア:

[(1, 28420889), (7, 4060127), (17, 1671817), (119, 238831), (241, 117929), (991, 28679), (1687, 16847), (4097, 6937)]