199970980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{908959}}^1$

素因数の和:908979

約数の個数: 24

約数和(自身を含む): 458115840

約数和(自身を除く): 258144860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 908959, 1817918, 3635836, 4544795, 9089590, 9998549, 18179180, 19997098, 39994196, 49992745, 99985490, 199970980]

約数ペア:

[(1, 199970980), (2, 99985490), (4, 49992745), (5, 39994196), (10, 19997098), (11, 18179180), (20, 9998549), (22, 9089590), (44, 4544795), (55, 3635836), (110, 1817918), (220, 908959)]