21075512

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{353}}^1\times {\mathrm{439}}^1$

素因数の和:815

約数の個数: 32

約数和(自身を含む): 42055200

約数和(自身を除く): 20979688

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 353, 439, 706, 878, 1412, 1756, 2824, 3512, 6001, 7463, 12002, 14926, 24004, 29852, 48008, 59704, 154967, 309934, 619868, 1239736, 2634439, 5268878, 10537756, 21075512]

約数ペア:

[(1, 21075512), (2, 10537756), (4, 5268878), (8, 2634439), (17, 1239736), (34, 619868), (68, 309934), (136, 154967), (353, 59704), (439, 48008), (706, 29852), (878, 24004), (1412, 14926), (1756, 12002), (2824, 7463), (3512, 6001)]