261342820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{409}}^1\times {\mathrm{743}}^1$

素因数の和:1204

約数の個数: 48

約数和(自身を含む): 563713920

約数和(自身を除く): 302371100

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 409, 430, 743, 818, 860, 1486, 1636, 2045, 2972, 3715, 4090, 7430, 8180, 14860, 17587, 31949, 35174, 63898, 70348, 87935, 127796, 159745, 175870, 303887, 319490, 351740, 607774, 638980, 1215548, 1519435, 3038870, 6077740, 13067141, 26134282, 52268564, 65335705, 130671410, 261342820]

約数ペア:

[(1, 261342820), (2, 130671410), (4, 65335705), (5, 52268564), (10, 26134282), (20, 13067141), (43, 6077740), (86, 3038870), (172, 1519435), (215, 1215548), (409, 638980), (430, 607774), (743, 351740), (818, 319490), (860, 303887), (1486, 175870), (1636, 159745), (2045, 127796), (2972, 87935), (3715, 70348), (4090, 63898), (7430, 35174), (8180, 31949), (14860, 17587)]