20668728

素因数分解:

$2^3\times 3^1\times {\mathrm{53}}^1\times {\mathrm{16249}}^1$

素因数の和:16311

約数の個数: 32

約数和(自身を含む): 52650000

約数和(自身を除く): 31981272

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 53, 106, 159, 212, 318, 424, 636, 1272, 16249, 32498, 48747, 64996, 97494, 129992, 194988, 389976, 861197, 1722394, 2583591, 3444788, 5167182, 6889576, 10334364, 20668728]

約数ペア:

[(1, 20668728), (2, 10334364), (3, 6889576), (4, 5167182), (6, 3444788), (8, 2583591), (12, 1722394), (24, 861197), (53, 389976), (106, 194988), (159, 129992), (212, 97494), (318, 64996), (424, 48747), (636, 32498), (1272, 16249)]