80140120

素因数分解:

$2^3\times 5^1\times {\mathrm{271}}^1\times {\mathrm{7393}}^1$

素因数の和:7675

約数の個数: 32

約数和(自身を含む): 181005120

約数和(自身を除く): 100865000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 271, 542, 1084, 1355, 2168, 2710, 5420, 7393, 10840, 14786, 29572, 36965, 59144, 73930, 147860, 295720, 2003503, 4007006, 8014012, 10017515, 16028024, 20035030, 40070060, 80140120]

約数ペア:

[(1, 80140120), (2, 40070060), (4, 20035030), (5, 16028024), (8, 10017515), (10, 8014012), (20, 4007006), (40, 2003503), (271, 295720), (542, 147860), (1084, 73930), (1355, 59144), (2168, 36965), (2710, 29572), (5420, 14786), (7393, 10840)]