19777538

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{2311}}^1$

素因数の和:2713

約数の個数: 16

約数和(自身を含む): 32460480

約数和(自身を除く): 12682942

約数列:

[1, 2, 11, 22, 389, 778, 2311, 4279, 4622, 8558, 25421, 50842, 898979, 1797958, 9888769, 19777538]

約数ペア:

[(1, 19777538), (2, 9888769), (11, 1797958), (22, 898979), (389, 50842), (778, 25421), (2311, 8558), (4279, 4622)]