20338520

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7589}}^1$

素因数の和:7667

約数の個数: 32

約数和(自身を含む): 46450800

約数和(自身を除く): 26112280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 7589, 15178, 30356, 37945, 60712, 75890, 151780, 303560, 508463, 1016926, 2033852, 2542315, 4067704, 5084630, 10169260, 20338520]

約数ペア:

[(1, 20338520), (2, 10169260), (4, 5084630), (5, 4067704), (8, 2542315), (10, 2033852), (20, 1016926), (40, 508463), (67, 303560), (134, 151780), (268, 75890), (335, 60712), (536, 37945), (670, 30356), (1340, 15178), (2680, 7589)]