18119780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4463}}^1$

素因数の和:4508

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 26877340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4463, 8926, 17852, 22315, 31241, 44630, 62482, 89260, 124964, 129427, 156205, 258854, 312410, 517708, 624820, 647135, 905989, 1294270, 1811978, 2588540, 3623956, 4529945, 9059890, 18119780]

約数ペア:

[(1, 18119780), (2, 9059890), (4, 4529945), (5, 3623956), (7, 2588540), (10, 1811978), (14, 1294270), (20, 905989), (28, 647135), (29, 624820), (35, 517708), (58, 312410), (70, 258854), (116, 156205), (140, 129427), (145, 124964), (203, 89260), (290, 62482), (406, 44630), (580, 31241), (812, 22315), (1015, 17852), (2030, 8926), (4060, 4463)]