16855996840

素因数分解:

$2^3\times 5^1\times {\mathrm{421399921}}^1$

素因数の和:421399932

約数の個数: 16

約数和(自身を含む): 37925992980

約数和(自身を除く): 21069996140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 421399921, 842799842, 1685599684, 2106999605, 3371199368, 4213999210, 8427998420, 16855996840]

約数ペア:

[(1, 16855996840), (2, 8427998420), (4, 4213999210), (5, 3371199368), (8, 2106999605), (10, 1685599684), (20, 842799842), (40, 421399921)]