18859820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1259}}^1$

素因数の和:1382

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 26863060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1259, 1498, 2140, 2518, 2996, 3745, 5036, 6295, 7490, 8813, 12590, 14980, 17626, 25180, 35252, 44065, 88130, 134713, 176260, 269426, 538852, 673565, 942991, 1347130, 1885982, 2694260, 3771964, 4714955, 9429910, 18859820]

約数ペア:

[(1, 18859820), (2, 9429910), (4, 4714955), (5, 3771964), (7, 2694260), (10, 1885982), (14, 1347130), (20, 942991), (28, 673565), (35, 538852), (70, 269426), (107, 176260), (140, 134713), (214, 88130), (428, 44065), (535, 35252), (749, 25180), (1070, 17626), (1259, 14980), (1498, 12590), (2140, 8813), (2518, 7490), (2996, 6295), (3745, 5036)]