20348575

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 29998080

約数和(自身を除く): 9649505

約数列:

[1, 5, 13, 17, 25, 29, 65, 85, 127, 145, 221, 325, 377, 425, 493, 635, 725, 1105, 1651, 1885, 2159, 2465, 3175, 3683, 5525, 6409, 8255, 9425, 10795, 12325, 18415, 28067, 32045, 41275, 47879, 53975, 62611, 92075, 140335, 160225, 239395, 313055, 701675, 813943, 1196975, 1565275, 4069715, 20348575]

約数ペア:

[(1, 20348575), (5, 4069715), (13, 1565275), (17, 1196975), (25, 813943), (29, 701675), (65, 313055), (85, 239395), (127, 160225), (145, 140335), (221, 92075), (325, 62611), (377, 53975), (425, 47879), (493, 41275), (635, 32045), (725, 28067), (1105, 18415), (1651, 12325), (1885, 10795), (2159, 9425), (2465, 8255), (3175, 6409), (3683, 5525)]