78872080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{127}}^1\times {\mathrm{1109}}^1$

素因数の和:1256

約数の個数: 80

約数和(自身を含む): 211415040

約数和(自身を除く): 132542960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 127, 140, 254, 280, 508, 560, 635, 889, 1016, 1109, 1270, 1778, 2032, 2218, 2540, 3556, 4436, 4445, 5080, 5545, 7112, 7763, 8872, 8890, 10160, 11090, 14224, 15526, 17744, 17780, 22180, 31052, 35560, 38815, 44360, 62104, 71120, 77630, 88720, 124208, 140843, 155260, 281686, 310520, 563372, 621040, 704215, 985901, 1126744, 1408430, 1971802, 2253488, 2816860, 3943604, 4929505, 5633720, 7887208, 9859010, 11267440, 15774416, 19718020, 39436040, 78872080]

約数ペア:

[(1, 78872080), (2, 39436040), (4, 19718020), (5, 15774416), (7, 11267440), (8, 9859010), (10, 7887208), (14, 5633720), (16, 4929505), (20, 3943604), (28, 2816860), (35, 2253488), (40, 1971802), (56, 1408430), (70, 1126744), (80, 985901), (112, 704215), (127, 621040), (140, 563372), (254, 310520), (280, 281686), (508, 155260), (560, 140843), (635, 124208), (889, 88720), (1016, 77630), (1109, 71120), (1270, 62104), (1778, 44360), (2032, 38815), (2218, 35560), (2540, 31052), (3556, 22180), (4436, 17780), (4445, 17744), (5080, 15526), (5545, 14224), (7112, 11090), (7763, 10160), (8872, 8890)]