217761245

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{4583}}^1$

素因数の和:4661

約数の個数: 32

約数和(自身を含む): 304964352

約数和(自身を除く): 87203107

約数列:

[1, 5, 13, 17, 43, 65, 85, 215, 221, 559, 731, 1105, 2795, 3655, 4583, 9503, 22915, 47515, 59579, 77911, 197069, 297895, 389555, 985345, 1012843, 2561897, 3350173, 5064215, 12809485, 16750865, 43552249, 217761245]

約数ペア:

[(1, 217761245), (5, 43552249), (13, 16750865), (17, 12809485), (43, 5064215), (65, 3350173), (85, 2561897), (215, 1012843), (221, 985345), (559, 389555), (731, 297895), (1105, 197069), (2795, 77911), (3655, 59579), (4583, 47515), (9503, 22915)]