20241640

素因数分解:

$2^3\times 5^1\times {\mathrm{643}}^1\times {\mathrm{787}}^1$

素因数の和:1441

約数の個数: 32

約数和(自身を含む): 45672480

約数和(自身を除く): 25430840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 643, 787, 1286, 1574, 2572, 3148, 3215, 3935, 5144, 6296, 6430, 7870, 12860, 15740, 25720, 31480, 506041, 1012082, 2024164, 2530205, 4048328, 5060410, 10120820, 20241640]

約数ペア:

[(1, 20241640), (2, 10120820), (4, 5060410), (5, 4048328), (8, 2530205), (10, 2024164), (20, 1012082), (40, 506041), (643, 31480), (787, 25720), (1286, 15740), (1574, 12860), (2572, 7870), (3148, 6430), (3215, 6296), (3935, 5144)]