19910485

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{307}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 29272320

約数和(自身を除く): 9361835

約数列:

[1, 5, 7, 17, 35, 85, 109, 119, 307, 545, 595, 763, 1535, 1853, 2149, 3815, 5219, 9265, 10745, 12971, 26095, 33463, 36533, 64855, 167315, 182665, 234241, 568871, 1171205, 2844355, 3982097, 19910485]

約数ペア:

[(1, 19910485), (5, 3982097), (7, 2844355), (17, 1171205), (35, 568871), (85, 234241), (109, 182665), (119, 167315), (307, 64855), (545, 36533), (595, 33463), (763, 26095), (1535, 12971), (1853, 10745), (2149, 9265), (3815, 5219)]