18478544

素因数分解:

$2^4\times 7^1\times {\mathrm{164987}}^1$

素因数の和:165002

約数の個数: 20

約数和(自身を含む): 40917024

約数和(自身を除く): 22438480

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 164987, 329974, 659948, 1154909, 1319896, 2309818, 2639792, 4619636, 9239272, 18478544]

約数ペア:

[(1, 18478544), (2, 9239272), (4, 4619636), (7, 2639792), (8, 2309818), (14, 1319896), (16, 1154909), (28, 659948), (56, 329974), (112, 164987)]