19721696

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{199}}^1$

素因数の和:391

約数の個数: 48

約数和(自身を含む): 41328000

約数和(自身を除く): 21606304

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 163, 199, 304, 326, 398, 608, 652, 796, 1304, 1592, 2608, 3097, 3184, 3781, 5216, 6194, 6368, 7562, 12388, 15124, 24776, 30248, 32437, 49552, 60496, 64874, 99104, 120992, 129748, 259496, 518992, 616303, 1037984, 1232606, 2465212, 4930424, 9860848, 19721696]

約数ペア:

[(1, 19721696), (2, 9860848), (4, 4930424), (8, 2465212), (16, 1232606), (19, 1037984), (32, 616303), (38, 518992), (76, 259496), (152, 129748), (163, 120992), (199, 99104), (304, 64874), (326, 60496), (398, 49552), (608, 32437), (652, 30248), (796, 24776), (1304, 15124), (1592, 12388), (2608, 7562), (3097, 6368), (3184, 6194), (3781, 5216)]