21811958

素因数分解:

$2^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{9677}}^1$

素因数の和:9716

約数の個数: 24

約数和(自身を含む): 39718512

約数和(自身を除く): 17906554

約数列:

[1, 2, 7, 14, 23, 46, 49, 98, 161, 322, 1127, 2254, 9677, 19354, 67739, 135478, 222571, 445142, 474173, 948346, 1557997, 3115994, 10905979, 21811958]

約数ペア:

[(1, 21811958), (2, 10905979), (7, 3115994), (14, 1557997), (23, 948346), (46, 474173), (49, 445142), (98, 222571), (161, 135478), (322, 67739), (1127, 19354), (2254, 9677)]