21300790

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1499}}^1$

素因数の和:1549

約数の個数: 48

約数和(自身を含む): 46170000

約数和(自身を除く): 24869210

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 49, 58, 70, 98, 145, 203, 245, 290, 406, 490, 1015, 1421, 1499, 2030, 2842, 2998, 7105, 7495, 10493, 14210, 14990, 20986, 43471, 52465, 73451, 86942, 104930, 146902, 217355, 304297, 367255, 434710, 608594, 734510, 1521485, 2130079, 3042970, 4260158, 10650395, 21300790]

約数ペア:

[(1, 21300790), (2, 10650395), (5, 4260158), (7, 3042970), (10, 2130079), (14, 1521485), (29, 734510), (35, 608594), (49, 434710), (58, 367255), (70, 304297), (98, 217355), (145, 146902), (203, 104930), (245, 86942), (290, 73451), (406, 52465), (490, 43471), (1015, 20986), (1421, 14990), (1499, 14210), (2030, 10493), (2842, 7495), (2998, 7105)]