19120145

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:257

約数の個数: 32

約数和(自身を含む): 26248320

約数和(自身を除く): 7128175

約数列:

[1, 5, 11, 41, 55, 61, 139, 205, 305, 451, 671, 695, 1529, 2255, 2501, 3355, 5699, 7645, 8479, 12505, 27511, 28495, 42395, 62689, 93269, 137555, 313445, 347639, 466345, 1738195, 3824029, 19120145]

約数ペア:

[(1, 19120145), (5, 3824029), (11, 1738195), (41, 466345), (55, 347639), (61, 313445), (139, 137555), (205, 93269), (305, 62689), (451, 42395), (671, 28495), (695, 27511), (1529, 12505), (2255, 8479), (2501, 7645), (3355, 5699)]