21466120

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41281}}^1$

素因数の和:41305

約数の個数: 32

約数和(自身を含む): 52015320

約数和(自身を除く): 30549200

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41281, 82562, 165124, 206405, 330248, 412810, 536653, 825620, 1073306, 1651240, 2146612, 2683265, 4293224, 5366530, 10733060, 21466120]

約数ペア:

[(1, 21466120), (2, 10733060), (4, 5366530), (5, 4293224), (8, 2683265), (10, 2146612), (13, 1651240), (20, 1073306), (26, 825620), (40, 536653), (52, 412810), (65, 330248), (104, 206405), (130, 165124), (260, 82562), (520, 41281)]