28507227

素因数分解:

$3^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{20261}}^1$

素因数の和:20338

約数の個数: 16

約数和(自身を含む): 44090112

約数和(自身を除く): 15582885

約数列:

[1, 3, 7, 21, 67, 201, 469, 1407, 20261, 60783, 141827, 425481, 1357487, 4072461, 9502409, 28507227]

約数ペア:

[(1, 28507227), (3, 9502409), (7, 4072461), (21, 1357487), (67, 425481), (201, 141827), (469, 60783), (1407, 20261)]