20999276

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{199}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 40857600

約数和(自身を除く): 19858324

約数列:

[1, 2, 4, 23, 31, 37, 46, 62, 74, 92, 124, 148, 199, 398, 713, 796, 851, 1147, 1426, 1702, 2294, 2852, 3404, 4577, 4588, 6169, 7363, 9154, 12338, 14726, 18308, 24676, 26381, 29452, 52762, 105524, 141887, 169349, 228253, 283774, 338698, 456506, 567548, 677396, 913012, 5249819, 10499638, 20999276]

約数ペア:

[(1, 20999276), (2, 10499638), (4, 5249819), (23, 913012), (31, 677396), (37, 567548), (46, 456506), (62, 338698), (74, 283774), (92, 228253), (124, 169349), (148, 141887), (199, 105524), (398, 52762), (713, 29452), (796, 26381), (851, 24676), (1147, 18308), (1426, 14726), (1702, 12338), (2294, 9154), (2852, 7363), (3404, 6169), (4577, 4588)]