28520989

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{25307}}^1$

素因数の和:25344

約数の個数: 12

約数和(自身を含む): 34621344

約数和(自身を除く): 6100355

約数列:

[1, 7, 23, 49, 161, 1127, 25307, 177149, 582061, 1240043, 4074427, 28520989]

約数ペア:

[(1, 28520989), (7, 4074427), (23, 1240043), (49, 582061), (161, 177149), (1127, 25307)]