81384140

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{179}}^2$

素因数の和:494

約数の個数: 36

約数和(自身を含む): 173220096

約数和(自身を除く): 91835956

約数列:

[1, 2, 4, 5, 10, 20, 127, 179, 254, 358, 508, 635, 716, 895, 1270, 1790, 2540, 3580, 22733, 32041, 45466, 64082, 90932, 113665, 128164, 160205, 227330, 320410, 454660, 640820, 4069207, 8138414, 16276828, 20346035, 40692070, 81384140]

約数ペア:

[(1, 81384140), (2, 40692070), (4, 20346035), (5, 16276828), (10, 8138414), (20, 4069207), (127, 640820), (179, 454660), (254, 320410), (358, 227330), (508, 160205), (635, 128164), (716, 113665), (895, 90932), (1270, 64082), (1790, 45466), (2540, 32041), (3580, 22733)]