31571428

素因数分解:

$2^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{15881}}^1$

素因数の和:15963

約数の個数: 24

約数和(自身を含む): 64036224

約数和(自身を除く): 32464796

約数列:

[1, 2, 4, 7, 14, 28, 71, 142, 284, 497, 994, 1988, 15881, 31762, 63524, 111167, 222334, 444668, 1127551, 2255102, 4510204, 7892857, 15785714, 31571428]

約数ペア:

[(1, 31571428), (2, 15785714), (4, 7892857), (7, 4510204), (14, 2255102), (28, 1127551), (71, 444668), (142, 222334), (284, 111167), (497, 63524), (994, 31762), (1988, 15881)]