18787671

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{4451}}^1$

素因数の和:4531

約数の個数: 24

約数和(自身を含む): 31484544

約数和(自身を除く): 12696873

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 4451, 13353, 31157, 40059, 93471, 280413, 298217, 894651, 2087519, 2683953, 6262557, 18787671]

約数ペア:

[(1, 18787671), (3, 6262557), (7, 2683953), (9, 2087519), (21, 894651), (63, 298217), (67, 280413), (201, 93471), (469, 40059), (603, 31157), (1407, 13353), (4221, 4451)]