71647828

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1\times {\mathrm{449}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 148176000

約数和(自身を除く): 76528172

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 139, 164, 278, 287, 449, 556, 574, 898, 973, 1148, 1796, 1946, 3143, 3892, 5699, 6286, 11398, 12572, 18409, 22796, 36818, 39893, 62411, 73636, 79786, 124822, 128863, 159572, 249644, 257726, 436877, 515452, 873754, 1747508, 2558851, 5117702, 10235404, 17911957, 35823914, 71647828]

約数ペア:

[(1, 71647828), (2, 35823914), (4, 17911957), (7, 10235404), (14, 5117702), (28, 2558851), (41, 1747508), (82, 873754), (139, 515452), (164, 436877), (278, 257726), (287, 249644), (449, 159572), (556, 128863), (574, 124822), (898, 79786), (973, 73636), (1148, 62411), (1796, 39893), (1946, 36818), (3143, 22796), (3892, 18409), (5699, 12572), (6286, 11398)]