128839888

素因数分解:

$2^4\times {\mathrm{113}}^1\times {\mathrm{71261}}^1$

素因数の和:71382

約数の個数: 20

約数和(自身を含む): 251839908

約数和(自身を除く): 123000020

約数列:

[1, 2, 4, 8, 16, 113, 226, 452, 904, 1808, 71261, 142522, 285044, 570088, 1140176, 8052493, 16104986, 32209972, 64419944, 128839888]

約数ペア:

[(1, 128839888), (2, 64419944), (4, 32209972), (8, 16104986), (16, 8052493), (113, 1140176), (226, 570088), (452, 285044), (904, 142522), (1808, 71261)]