18019911

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{443}}^1$

素因数の和:615

約数の個数: 32

約数和(自身を含む): 29836800

約数和(自身を除く): 11816889

約数列:

[1, 3, 7, 13, 21, 39, 91, 149, 273, 443, 447, 1043, 1329, 1937, 3101, 3129, 5759, 5811, 9303, 13559, 17277, 40313, 40677, 66007, 120939, 198021, 462049, 858091, 1386147, 2574273, 6006637, 18019911]

約数ペア:

[(1, 18019911), (3, 6006637), (7, 2574273), (13, 1386147), (21, 858091), (39, 462049), (91, 198021), (149, 120939), (273, 66007), (443, 40677), (447, 40313), (1043, 17277), (1329, 13559), (1937, 9303), (3101, 5811), (3129, 5759)]