56780120

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{19993}}^1$

素因数の和:20075

約数の個数: 32

約数和(自身を含む): 129561120

約数和(自身を除く): 72781000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 19993, 39986, 79972, 99965, 159944, 199930, 399860, 799720, 1419503, 2839006, 5678012, 7097515, 11356024, 14195030, 28390060, 56780120]

約数ペア:

[(1, 56780120), (2, 28390060), (4, 14195030), (5, 11356024), (8, 7097515), (10, 5678012), (20, 2839006), (40, 1419503), (71, 799720), (142, 399860), (284, 199930), (355, 159944), (568, 99965), (710, 79972), (1420, 39986), (2840, 19993)]