18887902

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{2141}}^1$

素因数の和:2555

約数の個数: 16

約数和(自身を含む): 30999024

約数和(自身を除く): 12111122

約数列:

[1, 2, 11, 22, 401, 802, 2141, 4282, 4411, 8822, 23551, 47102, 858541, 1717082, 9443951, 18887902]

約数ペア:

[(1, 18887902), (2, 9443951), (11, 1717082), (22, 858541), (401, 47102), (802, 23551), (2141, 8822), (4282, 4411)]