8989640

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{20431}}^1$

素因数の和:20453

約数の個数: 32

約数和(自身を含む): 22066560

約数和(自身を除く): 13076920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 20431, 40862, 81724, 102155, 163448, 204310, 224741, 408620, 449482, 817240, 898964, 1123705, 1797928, 2247410, 4494820, 8989640]

約数ペア:

[(1, 8989640), (2, 4494820), (4, 2247410), (5, 1797928), (8, 1123705), (10, 898964), (11, 817240), (20, 449482), (22, 408620), (40, 224741), (44, 204310), (55, 163448), (88, 102155), (110, 81724), (220, 40862), (440, 20431)]