261000130

素因数分解:

$2^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{40591}}^1$

素因数の和:41241

約数の個数: 16

約数和(自身を含む): 470542464

約数和(自身を除く): 209542334

約数列:

[1, 2, 5, 10, 643, 1286, 3215, 6430, 40591, 81182, 202955, 405910, 26100013, 52200026, 130500065, 261000130]

約数ペア:

[(1, 261000130), (2, 130500065), (5, 52200026), (10, 26100013), (643, 405910), (1286, 202955), (3215, 81182), (6430, 40591)]