20517406

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1427}}^1$

素因数の和:1528

約数の個数: 32

約数和(自身を含む): 38384640

約数和(自身を除く): 17867234

約数列:

[1, 2, 7, 13, 14, 26, 79, 91, 158, 182, 553, 1027, 1106, 1427, 2054, 2854, 7189, 9989, 14378, 18551, 19978, 37102, 112733, 129857, 225466, 259714, 789131, 1465529, 1578262, 2931058, 10258703, 20517406]

約数ペア:

[(1, 20517406), (2, 10258703), (7, 2931058), (13, 1578262), (14, 1465529), (26, 789131), (79, 259714), (91, 225466), (158, 129857), (182, 112733), (553, 37102), (1027, 19978), (1106, 18551), (1427, 14378), (2054, 9989), (2854, 7189)]