2171950

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{359}}^1$

素因数の和:393

約数の個数: 36

約数和(自身を含む): 4452840

約数和(自身を除く): 2280890

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 242, 275, 359, 550, 605, 718, 1210, 1795, 3025, 3590, 3949, 6050, 7898, 8975, 17950, 19745, 39490, 43439, 86878, 98725, 197450, 217195, 434390, 1085975, 2171950]

約数ペア:

[(1, 2171950), (2, 1085975), (5, 434390), (10, 217195), (11, 197450), (22, 98725), (25, 86878), (50, 43439), (55, 39490), (110, 19745), (121, 17950), (242, 8975), (275, 7898), (359, 6050), (550, 3949), (605, 3590), (718, 3025), (1210, 1795)]