20309912

素因数分解:

$2^3\times 7^2\times {\mathrm{197}}^1\times {\mathrm{263}}^1$

素因数の和:480

約数の個数: 48

約数和(自身を含む): 44692560

約数和(自身を除く): 24382648

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 197, 263, 392, 394, 526, 788, 1052, 1379, 1576, 1841, 2104, 2758, 3682, 5516, 7364, 9653, 11032, 12887, 14728, 19306, 25774, 38612, 51548, 51811, 77224, 103096, 103622, 207244, 362677, 414488, 725354, 1450708, 2538739, 2901416, 5077478, 10154956, 20309912]

約数ペア:

[(1, 20309912), (2, 10154956), (4, 5077478), (7, 2901416), (8, 2538739), (14, 1450708), (28, 725354), (49, 414488), (56, 362677), (98, 207244), (196, 103622), (197, 103096), (263, 77224), (392, 51811), (394, 51548), (526, 38612), (788, 25774), (1052, 19306), (1379, 14728), (1576, 12887), (1841, 11032), (2104, 9653), (2758, 7364), (3682, 5516)]