20004064

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:323

約数の個数: 48

約数和(自身を含む): 41065920

約数和(自身を除く): 21061856

約数列:

[1, 2, 4, 8, 16, 32, 41, 79, 82, 158, 164, 193, 316, 328, 386, 632, 656, 772, 1264, 1312, 1544, 2528, 3088, 3239, 6176, 6478, 7913, 12956, 15247, 15826, 25912, 30494, 31652, 51824, 60988, 63304, 103648, 121976, 126608, 243952, 253216, 487904, 625127, 1250254, 2500508, 5001016, 10002032, 20004064]

約数ペア:

[(1, 20004064), (2, 10002032), (4, 5001016), (8, 2500508), (16, 1250254), (32, 625127), (41, 487904), (79, 253216), (82, 243952), (158, 126608), (164, 121976), (193, 103648), (316, 63304), (328, 60988), (386, 51824), (632, 31652), (656, 30494), (772, 25912), (1264, 15826), (1312, 15247), (1544, 12956), (2528, 7913), (3088, 6478), (3239, 6176)]