254232140

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{208387}}^1$

素因数の和:208457

約数の個数: 24

約数和(自身を含む): 542642352

約数和(自身を除く): 288410212

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 208387, 416774, 833548, 1041935, 2083870, 4167740, 12711607, 25423214, 50846428, 63558035, 127116070, 254232140]

約数ペア:

[(1, 254232140), (2, 127116070), (4, 63558035), (5, 50846428), (10, 25423214), (20, 12711607), (61, 4167740), (122, 2083870), (244, 1041935), (305, 833548), (610, 416774), (1220, 208387)]