395271920

素因数分解:

$2^4\times 5^1\times {\mathrm{4940899}}^1$

素因数の和:4940912

約数の個数: 20

約数和(自身を含む): 919007400

約数和(自身を除く): 523735480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4940899, 9881798, 19763596, 24704495, 39527192, 49408990, 79054384, 98817980, 197635960, 395271920]

約数ペア:

[(1, 395271920), (2, 197635960), (4, 98817980), (5, 79054384), (8, 49408990), (10, 39527192), (16, 24704495), (20, 19763596), (40, 9881798), (80, 4940899)]