20782352

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{499}}^1$

素因数の和:663

約数の個数: 40

約数和(自身を含む): 42780000

約数和(自身を除く): 21997648

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 137, 152, 274, 304, 499, 548, 998, 1096, 1996, 2192, 2603, 3992, 5206, 7984, 9481, 10412, 18962, 20824, 37924, 41648, 68363, 75848, 136726, 151696, 273452, 546904, 1093808, 1298897, 2597794, 5195588, 10391176, 20782352]

約数ペア:

[(1, 20782352), (2, 10391176), (4, 5195588), (8, 2597794), (16, 1298897), (19, 1093808), (38, 546904), (76, 273452), (137, 151696), (152, 136726), (274, 75848), (304, 68363), (499, 41648), (548, 37924), (998, 20824), (1096, 18962), (1996, 10412), (2192, 9481), (2603, 7984), (3992, 5206)]