2728660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 6370560

約数和(自身を除く): 3641900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 79, 110, 157, 158, 220, 314, 316, 395, 628, 785, 790, 869, 1570, 1580, 1727, 1738, 3140, 3454, 3476, 4345, 6908, 8635, 8690, 12403, 17270, 17380, 24806, 34540, 49612, 62015, 124030, 136433, 248060, 272866, 545732, 682165, 1364330, 2728660]

約数ペア:

[(1, 2728660), (2, 1364330), (4, 682165), (5, 545732), (10, 272866), (11, 248060), (20, 136433), (22, 124030), (44, 62015), (55, 49612), (79, 34540), (110, 24806), (157, 17380), (158, 17270), (220, 12403), (314, 8690), (316, 8635), (395, 6908), (628, 4345), (785, 3476), (790, 3454), (869, 3140), (1570, 1738), (1580, 1727)]