81360160

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{72643}}^1$

素因数の和:72665

約数の個数: 48

約数和(自身を含む): 219675456

約数和(自身を除く): 138315296

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 72643, 145286, 290572, 363215, 508501, 581144, 726430, 1017002, 1162288, 1452860, 2034004, 2324576, 2542505, 2905720, 4068008, 5085010, 5811440, 8136016, 10170020, 11622880, 16272032, 20340040, 40680080, 81360160]

約数ペア:

[(1, 81360160), (2, 40680080), (4, 20340040), (5, 16272032), (7, 11622880), (8, 10170020), (10, 8136016), (14, 5811440), (16, 5085010), (20, 4068008), (28, 2905720), (32, 2542505), (35, 2324576), (40, 2034004), (56, 1452860), (70, 1162288), (80, 1017002), (112, 726430), (140, 581144), (160, 508501), (224, 363215), (280, 290572), (560, 145286), (1120, 72643)]