8640856

素因数分解:

$2^3\times 7^3\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:141

約数の個数: 64

約数和(自身を含む): 19584000

約数和(自身を除く): 10943144

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 49, 56, 67, 94, 98, 134, 188, 196, 268, 329, 343, 376, 392, 469, 536, 658, 686, 938, 1316, 1372, 1876, 2303, 2632, 2744, 3149, 3283, 3752, 4606, 6298, 6566, 9212, 12596, 13132, 16121, 18424, 22043, 22981, 25192, 26264, 32242, 44086, 45962, 64484, 88172, 91924, 128968, 154301, 176344, 183848, 308602, 617204, 1080107, 1234408, 2160214, 4320428, 8640856]

約数ペア:

[(1, 8640856), (2, 4320428), (4, 2160214), (7, 1234408), (8, 1080107), (14, 617204), (28, 308602), (47, 183848), (49, 176344), (56, 154301), (67, 128968), (94, 91924), (98, 88172), (134, 64484), (188, 45962), (196, 44086), (268, 32242), (329, 26264), (343, 25192), (376, 22981), (392, 22043), (469, 18424), (536, 16121), (658, 13132), (686, 12596), (938, 9212), (1316, 6566), (1372, 6298), (1876, 4606), (2303, 3752), (2632, 3283), (2744, 3149)]