19020155

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{389}}^1$

素因数の和:539

約数の個数: 32

約数和(自身を含む): 28753920

約数和(自身を除く): 9733765

約数列:

[1, 5, 7, 11, 35, 55, 77, 127, 385, 389, 635, 889, 1397, 1945, 2723, 4279, 4445, 6985, 9779, 13615, 21395, 29953, 48895, 49403, 149765, 247015, 345821, 543433, 1729105, 2717165, 3804031, 19020155]

約数ペア:

[(1, 19020155), (5, 3804031), (7, 2717165), (11, 1729105), (35, 543433), (55, 345821), (77, 247015), (127, 149765), (385, 49403), (389, 48895), (635, 29953), (889, 21395), (1397, 13615), (1945, 9779), (2723, 6985), (4279, 4445)]