21088655

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:383

約数の個数: 32

約数和(自身を含む): 30412800

約数和(自身を除く): 9324145

約数列:

[1, 5, 7, 29, 35, 79, 145, 203, 263, 395, 553, 1015, 1315, 1841, 2291, 2765, 7627, 9205, 11455, 16037, 20777, 38135, 53389, 80185, 103885, 145439, 266945, 602533, 727195, 3012665, 4217731, 21088655]

約数ペア:

[(1, 21088655), (5, 4217731), (7, 3012665), (29, 727195), (35, 602533), (79, 266945), (145, 145439), (203, 103885), (263, 80185), (395, 53389), (553, 38135), (1015, 20777), (1315, 16037), (1841, 11455), (2291, 9205), (2765, 7627)]