28712860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{130513}}^1$

素因数の和:130533

約数の個数: 24

約数和(自身を含む): 65779056

約数和(自身を除く): 37066196

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 130513, 261026, 522052, 652565, 1305130, 1435643, 2610260, 2871286, 5742572, 7178215, 14356430, 28712860]

約数ペア:

[(1, 28712860), (2, 14356430), (4, 7178215), (5, 5742572), (10, 2871286), (11, 2610260), (20, 1435643), (22, 1305130), (44, 652565), (55, 522052), (110, 261026), (220, 130513)]