20348405

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{3109}}^1$

素因数の和:3149

約数の個数: 32

約数和(自身を含む): 32244480

約数和(自身を除く): 11896075

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 385, 595, 935, 1309, 3109, 6545, 15545, 21763, 34199, 52853, 108815, 170995, 239393, 264265, 369971, 581383, 1196965, 1849855, 2906915, 4069681, 20348405]

約数ペア:

[(1, 20348405), (5, 4069681), (7, 2906915), (11, 1849855), (17, 1196965), (35, 581383), (55, 369971), (77, 264265), (85, 239393), (119, 170995), (187, 108815), (385, 52853), (595, 34199), (935, 21763), (1309, 15545), (3109, 6545)]