280201880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{1000721}}^1$

素因数の和:1000739

約数の個数: 32

約数和(自身を含む): 720519840

約数和(自身を除く): 440317960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 1000721, 2001442, 4002884, 5003605, 7005047, 8005768, 10007210, 14010094, 20014420, 28020188, 35025235, 40028840, 56040376, 70050470, 140100940, 280201880]

約数ペア:

[(1, 280201880), (2, 140100940), (4, 70050470), (5, 56040376), (7, 40028840), (8, 35025235), (10, 28020188), (14, 20014420), (20, 14010094), (28, 10007210), (35, 8005768), (40, 7005047), (56, 5003605), (70, 4002884), (140, 2001442), (280, 1000721)]