21977714

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{197}}^1\times {\mathrm{461}}^1$

素因数の和:682

約数の個数: 24

約数和(自身を含む): 36498924

約数和(自身を除く): 14521210

約数列:

[1, 2, 11, 22, 121, 197, 242, 394, 461, 922, 2167, 4334, 5071, 10142, 23837, 47674, 55781, 90817, 111562, 181634, 998987, 1997974, 10988857, 21977714]

約数ペア:

[(1, 21977714), (2, 10988857), (11, 1997974), (22, 998987), (121, 181634), (197, 111562), (242, 90817), (394, 55781), (461, 47674), (922, 23837), (2167, 10142), (4334, 5071)]