21809524

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{45061}}^1$

素因数の和:45087

約数の個数: 18

約数和(自身を含む): 41952722

約数和(自身を除く): 20143198

約数列:

[1, 2, 4, 11, 22, 44, 121, 242, 484, 45061, 90122, 180244, 495671, 991342, 1982684, 5452381, 10904762, 21809524]

約数ペア:

[(1, 21809524), (2, 10904762), (4, 5452381), (11, 1982684), (22, 991342), (44, 495671), (121, 180244), (242, 90122), (484, 45061)]