15752120

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{1999}}^1$

素因数の和:2207

約数の個数: 32

約数和(自身を含む): 35640000

約数和(自身を除く): 19887880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 1999, 3940, 3998, 7880, 7996, 9995, 15992, 19990, 39980, 79960, 393803, 787606, 1575212, 1969015, 3150424, 3938030, 7876060, 15752120]

約数ペア:

[(1, 15752120), (2, 7876060), (4, 3938030), (5, 3150424), (8, 1969015), (10, 1575212), (20, 787606), (40, 393803), (197, 79960), (394, 39980), (788, 19990), (985, 15992), (1576, 9995), (1970, 7996), (1999, 7880), (3940, 3998)]