21494410

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:287

約数の個数: 64

約数和(自身を含む): 46708992

約数和(自身を除く): 25214582

約数列:

[1, 2, 5, 7, 10, 14, 35, 37, 43, 70, 74, 86, 185, 193, 215, 259, 301, 370, 386, 430, 518, 602, 965, 1295, 1351, 1505, 1591, 1930, 2590, 2702, 3010, 3182, 6755, 7141, 7955, 8299, 11137, 13510, 14282, 15910, 16598, 22274, 35705, 41495, 49987, 55685, 58093, 71410, 82990, 99974, 111370, 116186, 249935, 290465, 307063, 499870, 580930, 614126, 1535315, 2149441, 3070630, 4298882, 10747205, 21494410]

約数ペア:

[(1, 21494410), (2, 10747205), (5, 4298882), (7, 3070630), (10, 2149441), (14, 1535315), (35, 614126), (37, 580930), (43, 499870), (70, 307063), (74, 290465), (86, 249935), (185, 116186), (193, 111370), (215, 99974), (259, 82990), (301, 71410), (370, 58093), (386, 55685), (430, 49987), (518, 41495), (602, 35705), (965, 22274), (1295, 16598), (1351, 15910), (1505, 14282), (1591, 13510), (1930, 11137), (2590, 8299), (2702, 7955), (3010, 7141), (3182, 6755)]