28508809

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{1663}}^1$

素因数の和:1780

約数の個数: 16

約数和(自身を含む): 34078720

約数和(自身を除く): 5569911

約数列:

[1, 7, 31, 79, 217, 553, 1663, 2449, 11641, 17143, 51553, 131377, 360871, 919639, 4072687, 28508809]

約数ペア:

[(1, 28508809), (7, 4072687), (31, 919639), (79, 360871), (217, 131377), (553, 51553), (1663, 17143), (2449, 11641)]