28728160

素因数分解:

$2^5\times 5^1\times {\mathrm{409}}^1\times {\mathrm{439}}^1$

素因数の和:863

約数の個数: 48

約数和(自身を含む): 68191200

約数和(自身を除く): 39463040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 409, 439, 818, 878, 1636, 1756, 2045, 2195, 3272, 3512, 4090, 4390, 6544, 7024, 8180, 8780, 13088, 14048, 16360, 17560, 32720, 35120, 65440, 70240, 179551, 359102, 718204, 897755, 1436408, 1795510, 2872816, 3591020, 5745632, 7182040, 14364080, 28728160]

約数ペア:

[(1, 28728160), (2, 14364080), (4, 7182040), (5, 5745632), (8, 3591020), (10, 2872816), (16, 1795510), (20, 1436408), (32, 897755), (40, 718204), (80, 359102), (160, 179551), (409, 70240), (439, 65440), (818, 35120), (878, 32720), (1636, 17560), (1756, 16360), (2045, 14048), (2195, 13088), (3272, 8780), (3512, 8180), (4090, 7024), (4390, 6544)]