99971440

素因数分解:

$2^4\times 5^1\times {\mathrm{1249643}}^1$

素因数の和:1249656

約数の個数: 20

約数和(自身を含む): 232433784

約数和(自身を除く): 132462344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1249643, 2499286, 4998572, 6248215, 9997144, 12496430, 19994288, 24992860, 49985720, 99971440]

約数ペア:

[(1, 99971440), (2, 49985720), (4, 24992860), (5, 19994288), (8, 12496430), (10, 9997144), (16, 6248215), (20, 4998572), (40, 2499286), (80, 1249643)]