28949680

素因数分解:

$2^4\times 5^1\times {\mathrm{361871}}^1$

素因数の和:361884

約数の個数: 20

約数和(自身を含む): 67308192

約数和(自身を除く): 38358512

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 361871, 723742, 1447484, 1809355, 2894968, 3618710, 5789936, 7237420, 14474840, 28949680]

約数ペア:

[(1, 28949680), (2, 14474840), (4, 7237420), (5, 5789936), (8, 3618710), (10, 2894968), (16, 1809355), (20, 1447484), (40, 723742), (80, 361871)]