217907984

素因数分解:

$2^4\times 7^1\times {\mathrm{1945607}}^1$

素因数の和:1945622

約数の個数: 20

約数和(自身を含む): 482510784

約数和(自身を除く): 264602800

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 1945607, 3891214, 7782428, 13619249, 15564856, 27238498, 31129712, 54476996, 108953992, 217907984]

約数ペア:

[(1, 217907984), (2, 108953992), (4, 54476996), (7, 31129712), (8, 27238498), (14, 15564856), (16, 13619249), (28, 7782428), (56, 3891214), (112, 1945607)]