21486045

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{12037}}^1$

素因数の和:12069

約数の個数: 32

約数和(自身を含む): 41603328

約数和(自身を除く): 20117283

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 85, 105, 119, 255, 357, 595, 1785, 12037, 36111, 60185, 84259, 180555, 204629, 252777, 421295, 613887, 1023145, 1263885, 1432403, 3069435, 4297209, 7162015, 21486045]

約数ペア:

[(1, 21486045), (3, 7162015), (5, 4297209), (7, 3069435), (15, 1432403), (17, 1263885), (21, 1023145), (35, 613887), (51, 421295), (85, 252777), (105, 204629), (119, 180555), (255, 84259), (357, 60185), (595, 36111), (1785, 12037)]