20430368

素因数分解:

$2^5\times 7^1\times {\mathrm{223}}^1\times {\mathrm{409}}^1$

素因数の和:649

約数の個数: 48

約数和(自身を含む): 46287360

約数和(自身を除く): 25856992

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 223, 224, 409, 446, 818, 892, 1561, 1636, 1784, 2863, 3122, 3272, 3568, 5726, 6244, 6544, 7136, 11452, 12488, 13088, 22904, 24976, 45808, 49952, 91207, 91616, 182414, 364828, 638449, 729656, 1276898, 1459312, 2553796, 2918624, 5107592, 10215184, 20430368]

約数ペア:

[(1, 20430368), (2, 10215184), (4, 5107592), (7, 2918624), (8, 2553796), (14, 1459312), (16, 1276898), (28, 729656), (32, 638449), (56, 364828), (112, 182414), (223, 91616), (224, 91207), (409, 49952), (446, 45808), (818, 24976), (892, 22904), (1561, 13088), (1636, 12488), (1784, 11452), (2863, 7136), (3122, 6544), (3272, 6244), (3568, 5726)]