12804140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^2\times {\mathrm{127}}^1$

素因数の和:278

約数の個数: 36

約数和(自身を含む): 27487488

約数和(自身を除く): 14683348

約数列:

[1, 2, 4, 5, 10, 20, 71, 127, 142, 254, 284, 355, 508, 635, 710, 1270, 1420, 2540, 5041, 9017, 10082, 18034, 20164, 25205, 36068, 45085, 50410, 90170, 100820, 180340, 640207, 1280414, 2560828, 3201035, 6402070, 12804140]

約数ペア:

[(1, 12804140), (2, 6402070), (4, 3201035), (5, 2560828), (10, 1280414), (20, 640207), (71, 180340), (127, 100820), (142, 90170), (254, 50410), (284, 45085), (355, 36068), (508, 25205), (635, 20164), (710, 18034), (1270, 10082), (1420, 9017), (2540, 5041)]