899916490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{21031}}^1$

素因数の和:21438

約数の個数: 32

約数和(自身を含む): 1771735680

約数和(自身を除く): 871819190

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 389, 778, 1945, 3890, 4279, 8558, 21031, 21395, 42062, 42790, 105155, 210310, 231341, 462682, 1156705, 2313410, 8181059, 16362118, 40905295, 81810590, 89991649, 179983298, 449958245, 899916490]

約数ペア:

[(1, 899916490), (2, 449958245), (5, 179983298), (10, 89991649), (11, 81810590), (22, 40905295), (55, 16362118), (110, 8181059), (389, 2313410), (778, 1156705), (1945, 462682), (3890, 231341), (4279, 210310), (8558, 105155), (21031, 42790), (21395, 42062)]