199788056

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^2\times {\mathrm{1999}}^1$

素因数の和:2080

約数の個数: 48

約数和(自身を含む): 417060000

約数和(自身を除く): 217271944

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 961, 1612, 1922, 1999, 3224, 3844, 3998, 7688, 7996, 12493, 15992, 24986, 25987, 49972, 51974, 61969, 99944, 103948, 123938, 207896, 247876, 495752, 805597, 1611194, 1921039, 3222388, 3842078, 6444776, 7684156, 15368312, 24973507, 49947014, 99894028, 199788056]

約数ペア:

[(1, 199788056), (2, 99894028), (4, 49947014), (8, 24973507), (13, 15368312), (26, 7684156), (31, 6444776), (52, 3842078), (62, 3222388), (104, 1921039), (124, 1611194), (248, 805597), (403, 495752), (806, 247876), (961, 207896), (1612, 123938), (1922, 103948), (1999, 99944), (3224, 61969), (3844, 51974), (3998, 49972), (7688, 25987), (7996, 24986), (12493, 15992)]