18639440

素因数分解:

$2^4\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1543}}^1$

素因数の和:1707

約数の個数: 40

約数和(自身を含む): 43651968

約数和(自身を除く): 25012528

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 151, 302, 604, 755, 1208, 1510, 1543, 2416, 3020, 3086, 6040, 6172, 7715, 12080, 12344, 15430, 24688, 30860, 61720, 123440, 232993, 465986, 931972, 1164965, 1863944, 2329930, 3727888, 4659860, 9319720, 18639440]

約数ペア:

[(1, 18639440), (2, 9319720), (4, 4659860), (5, 3727888), (8, 2329930), (10, 1863944), (16, 1164965), (20, 931972), (40, 465986), (80, 232993), (151, 123440), (302, 61720), (604, 30860), (755, 24688), (1208, 15430), (1510, 12344), (1543, 12080), (2416, 7715), (3020, 6172), (3086, 6040)]