210004420

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{16381}}^1$

素因数の和:17031

約数の個数: 24

約数和(自身を含む): 441724248

約数和(自身を除く): 231719828

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 6410, 12820, 16381, 32762, 65524, 81905, 163810, 327620, 10500221, 21000442, 42000884, 52501105, 105002210, 210004420]

約数ペア:

[(1, 210004420), (2, 105002210), (4, 52501105), (5, 42000884), (10, 21000442), (20, 10500221), (641, 327620), (1282, 163810), (2564, 81905), (3205, 65524), (6410, 32762), (12820, 16381)]