20718348

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1571}}^1$

素因数の和:1742

約数の個数: 48

約数和(自身を含む): 55636224

約数和(自身を除く): 34917876

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 157, 314, 471, 628, 942, 1099, 1571, 1884, 2198, 3142, 3297, 4396, 4713, 6284, 6594, 9426, 10997, 13188, 18852, 21994, 32991, 43988, 65982, 131964, 246647, 493294, 739941, 986588, 1479882, 1726529, 2959764, 3453058, 5179587, 6906116, 10359174, 20718348]

約数ペア:

[(1, 20718348), (2, 10359174), (3, 6906116), (4, 5179587), (6, 3453058), (7, 2959764), (12, 1726529), (14, 1479882), (21, 986588), (28, 739941), (42, 493294), (84, 246647), (157, 131964), (314, 65982), (471, 43988), (628, 32991), (942, 21994), (1099, 18852), (1571, 13188), (1884, 10997), (2198, 9426), (3142, 6594), (3297, 6284), (4396, 4713)]