28470980

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{21247}}^1$

素因数の和:21323

約数の個数: 24

約数和(自身を含む): 60684288

約数和(自身を除く): 32213308

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 670, 1340, 21247, 42494, 84988, 106235, 212470, 424940, 1423549, 2847098, 5694196, 7117745, 14235490, 28470980]

約数ペア:

[(1, 28470980), (2, 14235490), (4, 7117745), (5, 5694196), (10, 2847098), (20, 1423549), (67, 424940), (134, 212470), (268, 106235), (335, 84988), (670, 42494), (1340, 21247)]