213780215

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{971}}^1\times {\mathrm{4003}}^1$

素因数の和:4990

約数の個数: 16

約数和(自身を含む): 280215936

約数和(自身を除く): 66435721

約数列:

[1, 5, 11, 55, 971, 4003, 4855, 10681, 20015, 44033, 53405, 220165, 3886913, 19434565, 42756043, 213780215]

約数ペア:

[(1, 213780215), (5, 42756043), (11, 19434565), (55, 3886913), (971, 220165), (4003, 53405), (4855, 44033), (10681, 20015)]