20987112958

素因数分解:

$2^1\times 7^1\times {\mathrm{2221}}^1\times {\mathrm{674957}}^1$

素因数の和:677187

約数の個数: 16

約数和(自身を含む): 35994160224

約数和(自身を除く): 15007047266

約数列:

[1, 2, 7, 14, 2221, 4442, 15547, 31094, 674957, 1349914, 4724699, 9449398, 1499079497, 2998158994, 10493556479, 20987112958]

約数ペア:

[(1, 20987112958), (2, 10493556479), (7, 2998158994), (14, 1499079497), (2221, 9449398), (4442, 4724699), (15547, 1349914), (31094, 674957)]