21647535

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15859}}^1$

素因数の和:15887

約数の個数: 32

約数和(自身を含む): 42631680

約数和(自身を除く): 20984145

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 15859, 47577, 79295, 111013, 206167, 237885, 333039, 555065, 618501, 1030835, 1443169, 1665195, 3092505, 4329507, 7215845, 21647535]

約数ペア:

[(1, 21647535), (3, 7215845), (5, 4329507), (7, 3092505), (13, 1665195), (15, 1443169), (21, 1030835), (35, 618501), (39, 555065), (65, 333039), (91, 237885), (105, 206167), (195, 111013), (273, 79295), (455, 47577), (1365, 15859)]