12781328

素因数分解:

$2^4\times 7^1\times {\mathrm{139}}^1\times {\mathrm{821}}^1$

素因数の和:975

約数の個数: 40

約数和(自身を含む): 28539840

約数和(自身を除く): 15758512

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 139, 278, 556, 821, 973, 1112, 1642, 1946, 2224, 3284, 3892, 5747, 6568, 7784, 11494, 13136, 15568, 22988, 45976, 91952, 114119, 228238, 456476, 798833, 912952, 1597666, 1825904, 3195332, 6390664, 12781328]

約数ペア:

[(1, 12781328), (2, 6390664), (4, 3195332), (7, 1825904), (8, 1597666), (14, 912952), (16, 798833), (28, 456476), (56, 228238), (112, 114119), (139, 91952), (278, 45976), (556, 22988), (821, 15568), (973, 13136), (1112, 11494), (1642, 7784), (1946, 6568), (2224, 5747), (3284, 3892)]