131805860

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1\times {\mathrm{499}}^1$

素因数の和:836

約数の個数: 48

約数和(自身を含む): 284256000

約数和(自身を除く): 152450140

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 188, 235, 281, 470, 499, 562, 940, 998, 1124, 1405, 1996, 2495, 2810, 4990, 5620, 9980, 13207, 23453, 26414, 46906, 52828, 66035, 93812, 117265, 132070, 140219, 234530, 264140, 280438, 469060, 560876, 701095, 1402190, 2804380, 6590293, 13180586, 26361172, 32951465, 65902930, 131805860]

約数ペア:

[(1, 131805860), (2, 65902930), (4, 32951465), (5, 26361172), (10, 13180586), (20, 6590293), (47, 2804380), (94, 1402190), (188, 701095), (235, 560876), (281, 469060), (470, 280438), (499, 264140), (562, 234530), (940, 140219), (998, 132070), (1124, 117265), (1405, 93812), (1996, 66035), (2495, 52828), (2810, 46906), (4990, 26414), (5620, 23453), (9980, 13207)]