640109972

素因数分解:

$2^2\times {\mathrm{127}}^1\times {\mathrm{1260059}}^1$

素因数の和:1260190

約数の個数: 12

約数和(自身を含む): 1129013760

約数和(自身を除く): 488903788

約数列:

[1, 2, 4, 127, 254, 508, 1260059, 2520118, 5040236, 160027493, 320054986, 640109972]

約数ペア:

[(1, 640109972), (2, 320054986), (4, 160027493), (127, 5040236), (254, 2520118), (508, 1260059)]