21568216

素因数分解:

$2^3\times {\mathrm{397}}^1\times {\mathrm{6791}}^1$

素因数の和:7194

約数の個数: 16

約数和(自身を含む): 40548240

約数和(自身を除く): 18980024

約数列:

[1, 2, 4, 8, 397, 794, 1588, 3176, 6791, 13582, 27164, 54328, 2696027, 5392054, 10784108, 21568216]

約数ペア:

[(1, 21568216), (2, 10784108), (4, 5392054), (8, 2696027), (397, 54328), (794, 27164), (1588, 13582), (3176, 6791)]