21858904

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{66643}}^1$

素因数の和:66690

約数の個数: 16

約数和(自身を含む): 41985720

約数和(自身を除く): 20126816

約数列:

[1, 2, 4, 8, 41, 82, 164, 328, 66643, 133286, 266572, 533144, 2732363, 5464726, 10929452, 21858904]

約数ペア:

[(1, 21858904), (2, 10929452), (4, 5464726), (8, 2732363), (41, 533144), (82, 266572), (164, 133286), (328, 66643)]