81044320

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{269}}^2$

素因数の和:560

約数の個数: 72

約数和(自身を含む): 219636144

約数和(自身を除く): 138591824

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 269, 280, 538, 560, 1076, 1120, 1345, 1883, 2152, 2690, 3766, 4304, 5380, 7532, 8608, 9415, 10760, 15064, 18830, 21520, 30128, 37660, 43040, 60256, 72361, 75320, 144722, 150640, 289444, 301280, 361805, 506527, 578888, 723610, 1013054, 1157776, 1447220, 2026108, 2315552, 2532635, 2894440, 4052216, 5065270, 5788880, 8104432, 10130540, 11577760, 16208864, 20261080, 40522160, 81044320]

約数ペア:

[(1, 81044320), (2, 40522160), (4, 20261080), (5, 16208864), (7, 11577760), (8, 10130540), (10, 8104432), (14, 5788880), (16, 5065270), (20, 4052216), (28, 2894440), (32, 2532635), (35, 2315552), (40, 2026108), (56, 1447220), (70, 1157776), (80, 1013054), (112, 723610), (140, 578888), (160, 506527), (224, 361805), (269, 301280), (280, 289444), (538, 150640), (560, 144722), (1076, 75320), (1120, 72361), (1345, 60256), (1883, 43040), (2152, 37660), (2690, 30128), (3766, 21520), (4304, 18830), (5380, 15064), (7532, 10760), (8608, 9415)]