28018879

素因数分解:

$7^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1\times {\mathrm{431}}^1$

素因数の和:726

約数の個数: 16

約数和(自身を含む): 33094656

約数和(自身を除く): 5075777

約数列:

[1, 7, 37, 251, 259, 431, 1757, 3017, 9287, 15947, 65009, 108181, 111629, 757267, 4002697, 28018879]

約数ペア:

[(1, 28018879), (7, 4002697), (37, 757267), (251, 111629), (259, 108181), (431, 65009), (1757, 15947), (3017, 9287)]