20564180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{11299}}^1$

素因数の和:11328

約数の個数: 48

約数和(自身を含む): 53155200

約数和(自身を除く): 32591020

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 182, 260, 364, 455, 910, 1820, 11299, 22598, 45196, 56495, 79093, 112990, 146887, 158186, 225980, 293774, 316372, 395465, 587548, 734435, 790930, 1028209, 1468870, 1581860, 2056418, 2937740, 4112836, 5141045, 10282090, 20564180]

約数ペア:

[(1, 20564180), (2, 10282090), (4, 5141045), (5, 4112836), (7, 2937740), (10, 2056418), (13, 1581860), (14, 1468870), (20, 1028209), (26, 790930), (28, 734435), (35, 587548), (52, 395465), (65, 316372), (70, 293774), (91, 225980), (130, 158186), (140, 146887), (182, 112990), (260, 79093), (364, 56495), (455, 45196), (910, 22598), (1820, 11299)]