19811976

素因数分解:

$2^3\times 3^1\times {\mathrm{31}}^2\times {\mathrm{859}}^1$

素因数の和:930

約数の個数: 48

約数和(自身を含む): 51238800

約数和(自身を除く): 31426824

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 31, 62, 93, 124, 186, 248, 372, 744, 859, 961, 1718, 1922, 2577, 2883, 3436, 3844, 5154, 5766, 6872, 7688, 10308, 11532, 20616, 23064, 26629, 53258, 79887, 106516, 159774, 213032, 319548, 639096, 825499, 1650998, 2476497, 3301996, 4952994, 6603992, 9905988, 19811976]

約数ペア:

[(1, 19811976), (2, 9905988), (3, 6603992), (4, 4952994), (6, 3301996), (8, 2476497), (12, 1650998), (24, 825499), (31, 639096), (62, 319548), (93, 213032), (124, 159774), (186, 106516), (248, 79887), (372, 53258), (744, 26629), (859, 23064), (961, 20616), (1718, 11532), (1922, 10308), (2577, 7688), (2883, 6872), (3436, 5766), (3844, 5154)]