19736405

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{337}}^1$

素因数の和:425

約数の個数: 32

約数和(自身を含む): 27597024

約数和(自身を除く): 7860619

約数列:

[1, 5, 13, 17, 53, 65, 85, 221, 265, 337, 689, 901, 1105, 1685, 3445, 4381, 4505, 5729, 11713, 17861, 21905, 28645, 58565, 74477, 89305, 232193, 303637, 372385, 1160965, 1518185, 3947281, 19736405]

約数ペア:

[(1, 19736405), (5, 3947281), (13, 1518185), (17, 1160965), (53, 372385), (65, 303637), (85, 232193), (221, 89305), (265, 74477), (337, 58565), (689, 28645), (901, 21905), (1105, 17861), (1685, 11713), (3445, 5729), (4381, 4505)]