18697221

素因数分解:

$3^2\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{307}}^1$

素因数の和:481

約数の個数: 24

約数和(自身を含む): 27771744

約数和(自身を除く): 9074523

約数列:

[1, 3, 9, 67, 101, 201, 303, 307, 603, 909, 921, 2763, 6767, 20301, 20569, 31007, 60903, 61707, 93021, 185121, 279063, 2077469, 6232407, 18697221]

約数ペア:

[(1, 18697221), (3, 6232407), (9, 2077469), (67, 279063), (101, 185121), (201, 93021), (303, 61707), (307, 60903), (603, 31007), (909, 20569), (921, 20301), (2763, 6767)]