18464440

素因数分解:

$2^3\times 5^1\times {\mathrm{463}}^1\times {\mathrm{997}}^1$

素因数の和:1471

約数の個数: 32

約数和(自身を含む): 41676480

約数和(自身を除く): 23212040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 463, 926, 997, 1852, 1994, 2315, 3704, 3988, 4630, 4985, 7976, 9260, 9970, 18520, 19940, 39880, 461611, 923222, 1846444, 2308055, 3692888, 4616110, 9232220, 18464440]

約数ペア:

[(1, 18464440), (2, 9232220), (4, 4616110), (5, 3692888), (8, 2308055), (10, 1846444), (20, 923222), (40, 461611), (463, 39880), (926, 19940), (997, 18520), (1852, 9970), (1994, 9260), (2315, 7976), (3704, 4985), (3988, 4630)]