18990938

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{7867}}^1$

素因数の和:7957

約数の個数: 16

約数和(自身を含む): 30590784

約数和(自身を除く): 11599846

約数列:

[1, 2, 17, 34, 71, 142, 1207, 2414, 7867, 15734, 133739, 267478, 558557, 1117114, 9495469, 18990938]

約数ペア:

[(1, 18990938), (2, 9495469), (17, 1117114), (34, 558557), (71, 267478), (142, 133739), (1207, 15734), (2414, 7867)]