19996305

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1213}}^1$

素因数の和:1385

約数の個数: 32

約数和(自身を含む): 36827904

約数和(自身を除く): 16831599

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 157, 471, 785, 1099, 1213, 2355, 3297, 3639, 5495, 6065, 8491, 16485, 18195, 25473, 42455, 127365, 190441, 571323, 952205, 1333087, 2856615, 3999261, 6665435, 19996305]

約数ペア:

[(1, 19996305), (3, 6665435), (5, 3999261), (7, 2856615), (15, 1333087), (21, 952205), (35, 571323), (105, 190441), (157, 127365), (471, 42455), (785, 25473), (1099, 18195), (1213, 16485), (2355, 8491), (3297, 6065), (3639, 5495)]