20402941

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:205

約数の個数: 32

約数和(自身を含む): 25280640

約数和(自身を除く): 4877699

約数列:

[1, 13, 17, 19, 43, 113, 221, 247, 323, 559, 731, 817, 1469, 1921, 2147, 4199, 4859, 9503, 10621, 13889, 24973, 27911, 36499, 63167, 82603, 92321, 180557, 474487, 1073839, 1200173, 1569457, 20402941]

約数ペア:

[(1, 20402941), (13, 1569457), (17, 1200173), (19, 1073839), (43, 474487), (113, 180557), (221, 92321), (247, 82603), (323, 63167), (559, 36499), (731, 27911), (817, 24973), (1469, 13889), (1921, 10621), (2147, 9503), (4199, 4859)]