17940020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1009}}^1$

素因数の和:1152

約数の個数: 48

約数和(自身を含む): 43438080

約数和(自身を除く): 25498060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 127, 140, 254, 508, 635, 889, 1009, 1270, 1778, 2018, 2540, 3556, 4036, 4445, 5045, 7063, 8890, 10090, 14126, 17780, 20180, 28252, 35315, 70630, 128143, 141260, 256286, 512572, 640715, 897001, 1281430, 1794002, 2562860, 3588004, 4485005, 8970010, 17940020]

約数ペア:

[(1, 17940020), (2, 8970010), (4, 4485005), (5, 3588004), (7, 2562860), (10, 1794002), (14, 1281430), (20, 897001), (28, 640715), (35, 512572), (70, 256286), (127, 141260), (140, 128143), (254, 70630), (508, 35315), (635, 28252), (889, 20180), (1009, 17780), (1270, 14126), (1778, 10090), (2018, 8890), (2540, 7063), (3556, 5045), (4036, 4445)]