78432040

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{17989}}^1$

素因数の和:18109

約数の個数: 32

約数和(自身を含む): 178101000

約数和(自身を除く): 99668960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 17989, 35978, 71956, 89945, 143912, 179890, 359780, 719560, 1960801, 3921602, 7843204, 9804005, 15686408, 19608010, 39216020, 78432040]

約数ペア:

[(1, 78432040), (2, 39216020), (4, 19608010), (5, 15686408), (8, 9804005), (10, 7843204), (20, 3921602), (40, 1960801), (109, 719560), (218, 359780), (436, 179890), (545, 143912), (872, 89945), (1090, 71956), (2180, 35978), (4360, 17989)]