18877257

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{2011}}^1$

素因数の和:2173

約数の個数: 24

約数和(自身を含む): 31387200

約数和(自身を除く): 12509943

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 2011, 3129, 6033, 9387, 14077, 18099, 42231, 126693, 299639, 898917, 2097473, 2696751, 6292419, 18877257]

約数ペア:

[(1, 18877257), (3, 6292419), (7, 2696751), (9, 2097473), (21, 898917), (63, 299639), (149, 126693), (447, 42231), (1043, 18099), (1341, 14077), (2011, 9387), (3129, 6033)]