30440440

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{3863}}^1$

素因数の和:4071

約数の個数: 32

約数和(自身を含む): 68856480

約数和(自身を除く): 38416040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 3863, 3940, 7726, 7880, 15452, 19315, 30904, 38630, 77260, 154520, 761011, 1522022, 3044044, 3805055, 6088088, 7610110, 15220220, 30440440]

約数ペア:

[(1, 30440440), (2, 15220220), (4, 7610110), (5, 6088088), (8, 3805055), (10, 3044044), (20, 1522022), (40, 761011), (197, 154520), (394, 77260), (788, 38630), (985, 30904), (1576, 19315), (1970, 15452), (3863, 7880), (3940, 7726)]