20207985

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{11321}}^1$

素因数の和:11353

約数の個数: 32

約数和(自身を含む): 39128832

約数和(自身を除く): 18920847

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 11321, 33963, 56605, 79247, 169815, 192457, 237741, 396235, 577371, 962285, 1188705, 1347199, 2886855, 4041597, 6735995, 20207985]

約数ペア:

[(1, 20207985), (3, 6735995), (5, 4041597), (7, 2886855), (15, 1347199), (17, 1188705), (21, 962285), (35, 577371), (51, 396235), (85, 237741), (105, 192457), (119, 169815), (255, 79247), (357, 56605), (595, 33963), (1785, 11321)]