21689800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{9859}}^1$

素因数の和:9886

約数の個数: 48

約数和(自身を含む): 55018800

約数和(自身を除く): 33329000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 550, 1100, 2200, 9859, 19718, 39436, 49295, 78872, 98590, 108449, 197180, 216898, 246475, 394360, 433796, 492950, 542245, 867592, 985900, 1084490, 1971800, 2168980, 2711225, 4337960, 5422450, 10844900, 21689800]

約数ペア:

[(1, 21689800), (2, 10844900), (4, 5422450), (5, 4337960), (8, 2711225), (10, 2168980), (11, 1971800), (20, 1084490), (22, 985900), (25, 867592), (40, 542245), (44, 492950), (50, 433796), (55, 394360), (88, 246475), (100, 216898), (110, 197180), (200, 108449), (220, 98590), (275, 78872), (440, 49295), (550, 39436), (1100, 19718), (2200, 9859)]