71780080

素因数分解:

$2^4\times 5^1\times {\mathrm{897251}}^1$

素因数の和:897264

約数の個数: 20

約数和(自身を含む): 166888872

約数和(自身を除く): 95108792

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 897251, 1794502, 3589004, 4486255, 7178008, 8972510, 14356016, 17945020, 35890040, 71780080]

約数ペア:

[(1, 71780080), (2, 35890040), (4, 17945020), (5, 14356016), (8, 8972510), (10, 7178008), (16, 4486255), (20, 3589004), (40, 1794502), (80, 897251)]