19723984

素因数分解:

$2^4\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2887}}^1$

素因数の和:2963

約数の個数: 40

約数和(自身を含む): 44405888

約数和(自身を除く): 24681904

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 61, 112, 122, 244, 427, 488, 854, 976, 1708, 2887, 3416, 5774, 6832, 11548, 20209, 23096, 40418, 46192, 80836, 161672, 176107, 323344, 352214, 704428, 1232749, 1408856, 2465498, 2817712, 4930996, 9861992, 19723984]

約数ペア:

[(1, 19723984), (2, 9861992), (4, 4930996), (7, 2817712), (8, 2465498), (14, 1408856), (16, 1232749), (28, 704428), (56, 352214), (61, 323344), (112, 176107), (122, 161672), (244, 80836), (427, 46192), (488, 40418), (854, 23096), (976, 20209), (1708, 11548), (2887, 6832), (3416, 5774)]