20988978

素因数分解:

$2^1\times 3^1\times {\mathrm{47}}^1\times {\mathrm{263}}^1\times {\mathrm{283}}^1$

素因数の和:598

約数の個数: 32

約数和(自身を含む): 43186176

約数和(自身を除く): 22197198

約数列:

[1, 2, 3, 6, 47, 94, 141, 263, 282, 283, 526, 566, 789, 849, 1578, 1698, 12361, 13301, 24722, 26602, 37083, 39903, 74166, 74429, 79806, 148858, 223287, 446574, 3498163, 6996326, 10494489, 20988978]

約数ペア:

[(1, 20988978), (2, 10494489), (3, 6996326), (6, 3498163), (47, 446574), (94, 223287), (141, 148858), (263, 79806), (282, 74429), (283, 74166), (526, 39903), (566, 37083), (789, 26602), (849, 24722), (1578, 13301), (1698, 12361)]