1581728260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{81281}}^1$

素因数の和:81436

約数の個数: 48

約数和(自身を含む): 3823505280

約数和(自身を除く): 2241777020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 2780, 3892, 4865, 9730, 19460, 81281, 162562, 325124, 406405, 568967, 812810, 1137934, 1625620, 2275868, 2844835, 5689670, 11298059, 11379340, 22596118, 45192236, 56490295, 79086413, 112980590, 158172826, 225961180, 316345652, 395432065, 790864130, 1581728260]

約数ペア:

[(1, 1581728260), (2, 790864130), (4, 395432065), (5, 316345652), (7, 225961180), (10, 158172826), (14, 112980590), (20, 79086413), (28, 56490295), (35, 45192236), (70, 22596118), (139, 11379340), (140, 11298059), (278, 5689670), (556, 2844835), (695, 2275868), (973, 1625620), (1390, 1137934), (1946, 812810), (2780, 568967), (3892, 406405), (4865, 325124), (9730, 162562), (19460, 81281)]