18815391

素因数分解:

$3^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{2957}}^1$

素因数の和:3071

約数の個数: 24

約数和(自身を含む): 31378464

約数和(自身を除く): 12563073

約数列:

[1, 3, 7, 9, 21, 63, 101, 303, 707, 909, 2121, 2957, 6363, 8871, 20699, 26613, 62097, 186291, 298657, 895971, 2090599, 2687913, 6271797, 18815391]

約数ペア:

[(1, 18815391), (3, 6271797), (7, 2687913), (9, 2090599), (21, 895971), (63, 298657), (101, 186291), (303, 62097), (707, 26613), (909, 20699), (2121, 8871), (2957, 6363)]