21024680

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{1489}}^1$

素因数の和:1853

約数の個数: 32

約数和(自身を含む): 47471400

約数和(自身を除く): 26446720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1412, 1489, 1765, 2824, 2978, 3530, 5956, 7060, 7445, 11912, 14120, 14890, 29780, 59560, 525617, 1051234, 2102468, 2628085, 4204936, 5256170, 10512340, 21024680]

約数ペア:

[(1, 21024680), (2, 10512340), (4, 5256170), (5, 4204936), (8, 2628085), (10, 2102468), (20, 1051234), (40, 525617), (353, 59560), (706, 29780), (1412, 14890), (1489, 14120), (1765, 11912), (2824, 7445), (2978, 7060), (3530, 5956)]