18242860

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{1423}}^1$

素因数の和:2073

約数の個数: 24

約数和(自身を含む): 38396736

約数和(自身を除く): 20153876

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 1423, 2564, 2846, 3205, 5692, 6410, 7115, 12820, 14230, 28460, 912143, 1824286, 3648572, 4560715, 9121430, 18242860]

約数ペア:

[(1, 18242860), (2, 9121430), (4, 4560715), (5, 3648572), (10, 1824286), (20, 912143), (641, 28460), (1282, 14230), (1423, 12820), (2564, 7115), (2846, 6410), (3205, 5692)]