18431320

素因数分解:

$2^3\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2339}}^1$

素因数の和:2547

約数の個数: 32

約数和(自身を含む): 41698800

約数和(自身を除く): 23267480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 197, 394, 788, 985, 1576, 1970, 2339, 3940, 4678, 7880, 9356, 11695, 18712, 23390, 46780, 93560, 460783, 921566, 1843132, 2303915, 3686264, 4607830, 9215660, 18431320]

約数ペア:

[(1, 18431320), (2, 9215660), (4, 4607830), (5, 3686264), (8, 2303915), (10, 1843132), (20, 921566), (40, 460783), (197, 93560), (394, 46780), (788, 23390), (985, 18712), (1576, 11695), (1970, 9356), (2339, 7880), (3940, 4678)]