19986645

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{11197}}^1$

素因数の和:11229

約数の個数: 32

約数和(自身を含む): 38700288

約数和(自身を除く): 18713643

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 11197, 33591, 55985, 78379, 167955, 190349, 235137, 391895, 571047, 951745, 1175685, 1332443, 2855235, 3997329, 6662215, 19986645]

約数ペア:

[(1, 19986645), (3, 6662215), (5, 3997329), (7, 2855235), (15, 1332443), (17, 1175685), (21, 951745), (35, 571047), (51, 391895), (85, 235137), (105, 190349), (119, 167955), (255, 78379), (357, 55985), (595, 33591), (1785, 11197)]