19104561

素因数分解:

$3^2\times 7^2\times {\mathrm{43321}}^1$

素因数の和:43341

約数の個数: 18

約数和(自身を含む): 32101602

約数和(自身を除く): 12997041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 43321, 129963, 303247, 389889, 909741, 2122729, 2729223, 6368187, 19104561]

約数ペア:

[(1, 19104561), (3, 6368187), (7, 2729223), (9, 2122729), (21, 909741), (49, 389889), (63, 303247), (147, 129963), (441, 43321)]