21685616

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{43721}}^1$

素因数の和:43760

約数の個数: 20

約数和(自身を含む): 43372224

約数和(自身を除く): 21686608

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 43721, 87442, 174884, 349768, 699536, 1355351, 2710702, 5421404, 10842808, 21685616]

約数ペア:

[(1, 21685616), (2, 10842808), (4, 5421404), (8, 2710702), (16, 1355351), (31, 699536), (62, 349768), (124, 174884), (248, 87442), (496, 43721)]