20658568

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^2\times {\mathrm{167}}^1$

素因数の和:274

約数の個数: 48

約数和(自身を含む): 45501120

約数和(自身を除く): 24842552

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 94, 167, 188, 329, 334, 376, 658, 668, 1169, 1316, 1336, 2209, 2338, 2632, 4418, 4676, 7849, 8836, 9352, 15463, 15698, 17672, 30926, 31396, 54943, 61852, 62792, 109886, 123704, 219772, 368903, 439544, 737806, 1475612, 2582321, 2951224, 5164642, 10329284, 20658568]

約数ペア:

[(1, 20658568), (2, 10329284), (4, 5164642), (7, 2951224), (8, 2582321), (14, 1475612), (28, 737806), (47, 439544), (56, 368903), (94, 219772), (167, 123704), (188, 109886), (329, 62792), (334, 61852), (376, 54943), (658, 31396), (668, 30926), (1169, 17672), (1316, 15698), (1336, 15463), (2209, 9352), (2338, 8836), (2632, 7849), (4418, 4676)]