20808211893

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{52150907}}^1$

素因数の和:52150936

約数の個数: 16

約数和(自身を含む): 33376581120

約数和(自身を除く): 12568369227

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 52150907, 156452721, 365056349, 990867233, 1095169047, 2972601699, 6936070631, 20808211893]

約数ペア:

[(1, 20808211893), (3, 6936070631), (7, 2972601699), (19, 1095169047), (21, 990867233), (57, 365056349), (133, 156452721), (399, 52150907)]