81375520

素因数分解:

$2^5\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7591}}^1$

素因数の和:7673

約数の個数: 48

約数和(自身を含む): 195144768

約数和(自身を除く): 113769248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 67, 80, 134, 160, 268, 335, 536, 670, 1072, 1340, 2144, 2680, 5360, 7591, 10720, 15182, 30364, 37955, 60728, 75910, 121456, 151820, 242912, 303640, 508597, 607280, 1017194, 1214560, 2034388, 2542985, 4068776, 5085970, 8137552, 10171940, 16275104, 20343880, 40687760, 81375520]

約数ペア:

[(1, 81375520), (2, 40687760), (4, 20343880), (5, 16275104), (8, 10171940), (10, 8137552), (16, 5085970), (20, 4068776), (32, 2542985), (40, 2034388), (67, 1214560), (80, 1017194), (134, 607280), (160, 508597), (268, 303640), (335, 242912), (536, 151820), (670, 121456), (1072, 75910), (1340, 60728), (2144, 37955), (2680, 30364), (5360, 15182), (7591, 10720)]