20987592

素因数分解:

$2^3\times 3^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{197}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 55313280

約数和(自身を除く): 34325688

約数列:

[1, 2, 3, 4, 6, 8, 12, 23, 24, 46, 69, 92, 138, 184, 193, 197, 276, 386, 394, 552, 579, 591, 772, 788, 1158, 1182, 1544, 1576, 2316, 2364, 4439, 4531, 4632, 4728, 8878, 9062, 13317, 13593, 17756, 18124, 26634, 27186, 35512, 36248, 38021, 53268, 54372, 76042, 106536, 108744, 114063, 152084, 228126, 304168, 456252, 874483, 912504, 1748966, 2623449, 3497932, 5246898, 6995864, 10493796, 20987592]

約数ペア:

[(1, 20987592), (2, 10493796), (3, 6995864), (4, 5246898), (6, 3497932), (8, 2623449), (12, 1748966), (23, 912504), (24, 874483), (46, 456252), (69, 304168), (92, 228126), (138, 152084), (184, 114063), (193, 108744), (197, 106536), (276, 76042), (386, 54372), (394, 53268), (552, 38021), (579, 36248), (591, 35512), (772, 27186), (788, 26634), (1158, 18124), (1182, 17756), (1544, 13593), (1576, 13317), (2316, 9062), (2364, 8878), (4439, 4728), (4531, 4632)]