20115907959

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1\times {\mathrm{401}}^1\times {\mathrm{761}}^1$

素因数の和:1288

約数の個数: 64

約数和(自身を含む): 31916510208

約数和(自身を除く): 11800602249

約数列:

[1, 3, 7, 21, 43, 73, 129, 219, 301, 401, 511, 761, 903, 1203, 1533, 2283, 2807, 3139, 5327, 8421, 9417, 15981, 17243, 21973, 29273, 32723, 51729, 55553, 65919, 87819, 98169, 120701, 166659, 204911, 229061, 305161, 362103, 388871, 614733, 687183, 915483, 1166613, 1258739, 2136127, 2388779, 3776217, 6408381, 7166337, 8811173, 13121923, 16721453, 22276753, 26433519, 39365769, 50164359, 66830259, 91853461, 155937271, 275560383, 467811813, 957900379, 2873701137, 6705302653, 20115907959]

約数ペア:

[(1, 20115907959), (3, 6705302653), (7, 2873701137), (21, 957900379), (43, 467811813), (73, 275560383), (129, 155937271), (219, 91853461), (301, 66830259), (401, 50164359), (511, 39365769), (761, 26433519), (903, 22276753), (1203, 16721453), (1533, 13121923), (2283, 8811173), (2807, 7166337), (3139, 6408381), (5327, 3776217), (8421, 2388779), (9417, 2136127), (15981, 1258739), (17243, 1166613), (21973, 915483), (29273, 687183), (32723, 614733), (51729, 388871), (55553, 362103), (65919, 305161), (87819, 229061), (98169, 204911), (120701, 166659)]