18028520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{10993}}^1$

素因数の和:11045

約数の個数: 32

約数和(自身を含む): 41557320

約数和(自身を除く): 23528800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 10993, 21986, 43972, 54965, 87944, 109930, 219860, 439720, 450713, 901426, 1802852, 2253565, 3605704, 4507130, 9014260, 18028520]

約数ペア:

[(1, 18028520), (2, 9014260), (4, 4507130), (5, 3605704), (8, 2253565), (10, 1802852), (20, 901426), (40, 450713), (41, 439720), (82, 219860), (164, 109930), (205, 87944), (328, 54965), (410, 43972), (820, 21986), (1640, 10993)]