20649489

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{18553}}^1$

素因数の和:18616

約数の個数: 16

約数和(自身を含む): 32061312

約数和(自身を除く): 11411823

約数列:

[1, 3, 7, 21, 53, 159, 371, 1113, 18553, 55659, 129871, 389613, 983309, 2949927, 6883163, 20649489]

約数ペア:

[(1, 20649489), (3, 6883163), (7, 2949927), (21, 983309), (53, 389613), (159, 129871), (371, 55659), (1113, 18553)]