19963984

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3863}}^1$

素因数の和:3907

約数の個数: 40

約数和(自身を含む): 43122240

約数和(自身を除く): 23158256

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 272, 304, 323, 646, 1292, 2584, 3863, 5168, 7726, 15452, 30904, 61808, 65671, 73397, 131342, 146794, 262684, 293588, 525368, 587176, 1050736, 1174352, 1247749, 2495498, 4990996, 9981992, 19963984]

約数ペア:

[(1, 19963984), (2, 9981992), (4, 4990996), (8, 2495498), (16, 1247749), (17, 1174352), (19, 1050736), (34, 587176), (38, 525368), (68, 293588), (76, 262684), (136, 146794), (152, 131342), (272, 73397), (304, 65671), (323, 61808), (646, 30904), (1292, 15452), (2584, 7726), (3863, 5168)]