19768580

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{547}}^1$

素因数の和:708

約数の個数: 48

約数和(自身を含む): 45111360

約数和(自身を除く): 25342780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 547, 556, 695, 1094, 1390, 1807, 2188, 2735, 2780, 3614, 5470, 7111, 7228, 9035, 10940, 14222, 18070, 28444, 35555, 36140, 71110, 76033, 142220, 152066, 304132, 380165, 760330, 988429, 1520660, 1976858, 3953716, 4942145, 9884290, 19768580]

約数ペア:

[(1, 19768580), (2, 9884290), (4, 4942145), (5, 3953716), (10, 1976858), (13, 1520660), (20, 988429), (26, 760330), (52, 380165), (65, 304132), (130, 152066), (139, 142220), (260, 76033), (278, 71110), (547, 36140), (556, 35555), (695, 28444), (1094, 18070), (1390, 14222), (1807, 10940), (2188, 9035), (2735, 7228), (2780, 7111), (3614, 5470)]