20494728

素因数分解:

$2^3\times 3^3\times {\mathrm{239}}^1\times {\mathrm{397}}^1$

素因数の和:651

約数の個数: 64

約数和(自身を含む): 57312000

約数和(自身を除く): 36817272

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216, 239, 397, 478, 717, 794, 956, 1191, 1434, 1588, 1912, 2151, 2382, 2868, 3176, 3573, 4302, 4764, 5736, 6453, 7146, 8604, 9528, 10719, 12906, 14292, 17208, 21438, 25812, 28584, 42876, 51624, 85752, 94883, 189766, 284649, 379532, 569298, 759064, 853947, 1138596, 1707894, 2277192, 2561841, 3415788, 5123682, 6831576, 10247364, 20494728]

約数ペア:

[(1, 20494728), (2, 10247364), (3, 6831576), (4, 5123682), (6, 3415788), (8, 2561841), (9, 2277192), (12, 1707894), (18, 1138596), (24, 853947), (27, 759064), (36, 569298), (54, 379532), (72, 284649), (108, 189766), (216, 94883), (239, 85752), (397, 51624), (478, 42876), (717, 28584), (794, 25812), (956, 21438), (1191, 17208), (1434, 14292), (1588, 12906), (1912, 10719), (2151, 9528), (2382, 8604), (2868, 7146), (3176, 6453), (3573, 5736), (4302, 4764)]