21062008

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3371}}^1$

素因数の和:3459

約数の個数: 32

約数和(自身を含む): 43701120

約数和(自身を除く): 22639112

約数列:

[1, 2, 4, 8, 11, 22, 44, 71, 88, 142, 284, 568, 781, 1562, 3124, 3371, 6248, 6742, 13484, 26968, 37081, 74162, 148324, 239341, 296648, 478682, 957364, 1914728, 2632751, 5265502, 10531004, 21062008]

約数ペア:

[(1, 21062008), (2, 10531004), (4, 5265502), (8, 2632751), (11, 1914728), (22, 957364), (44, 478682), (71, 296648), (88, 239341), (142, 148324), (284, 74162), (568, 37081), (781, 26968), (1562, 13484), (3124, 6742), (3371, 6248)]