1720559920

素因数分解:

$2^4\times 5^1\times {\mathrm{21506999}}^1$

素因数の和:21507012

約数の個数: 20

約数和(自身を含む): 4000302000

約数和(自身を除く): 2279742080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 21506999, 43013998, 86027996, 107534995, 172055992, 215069990, 344111984, 430139980, 860279960, 1720559920]

約数ペア:

[(1, 1720559920), (2, 860279960), (4, 430139980), (5, 344111984), (8, 215069990), (10, 172055992), (16, 107534995), (20, 86027996), (40, 43013998), (80, 21506999)]