28324280

素因数分解:

$2^3\times 5^1\times {\mathrm{439}}^1\times {\mathrm{1613}}^1$

素因数の和:2063

約数の個数: 32

約数和(自身を含む): 63914400

約数和(自身を除く): 35590120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 439, 878, 1613, 1756, 2195, 3226, 3512, 4390, 6452, 8065, 8780, 12904, 16130, 17560, 32260, 64520, 708107, 1416214, 2832428, 3540535, 5664856, 7081070, 14162140, 28324280]

約数ペア:

[(1, 28324280), (2, 14162140), (4, 7081070), (5, 5664856), (8, 3540535), (10, 2832428), (20, 1416214), (40, 708107), (439, 64520), (878, 32260), (1613, 17560), (1756, 16130), (2195, 12904), (3226, 8780), (3512, 8065), (4390, 6452)]