20721252

素因数分解:

$2^2\times 3^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{389}}^1$

素因数の和:612

約数の個数: 48

約数和(自身を含む): 50843520

約数和(自身を除く): 30122268

約数列:

[1, 2, 3, 4, 6, 12, 23, 46, 69, 92, 138, 193, 276, 386, 389, 579, 772, 778, 1158, 1167, 1556, 2316, 2334, 4439, 4668, 8878, 8947, 13317, 17756, 17894, 26634, 26841, 35788, 53268, 53682, 75077, 107364, 150154, 225231, 300308, 450462, 900924, 1726771, 3453542, 5180313, 6907084, 10360626, 20721252]

約数ペア:

[(1, 20721252), (2, 10360626), (3, 6907084), (4, 5180313), (6, 3453542), (12, 1726771), (23, 900924), (46, 450462), (69, 300308), (92, 225231), (138, 150154), (193, 107364), (276, 75077), (386, 53682), (389, 53268), (579, 35788), (772, 26841), (778, 26634), (1158, 17894), (1167, 17756), (1556, 13317), (2316, 8947), (2334, 8878), (4439, 4668)]