17977820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{128413}}^1$

素因数の和:128429

約数の個数: 24

約数和(自身を含む): 43147104

約数和(自身を除く): 25169284

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 128413, 256826, 513652, 642065, 898891, 1284130, 1797782, 2568260, 3595564, 4494455, 8988910, 17977820]

約数ペア:

[(1, 17977820), (2, 8988910), (4, 4494455), (5, 3595564), (7, 2568260), (10, 1797782), (14, 1284130), (20, 898891), (28, 642065), (35, 513652), (70, 256826), (140, 128413)]