21781984

素因数分解:

$2^5\times 7^1\times {\mathrm{97241}}^1$

素因数の和:97258

約数の個数: 24

約数和(自身を含む): 49009968

約数和(自身を除く): 27227984

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 224, 97241, 194482, 388964, 680687, 777928, 1361374, 1555856, 2722748, 3111712, 5445496, 10890992, 21781984]

約数ペア:

[(1, 21781984), (2, 10890992), (4, 5445496), (7, 3111712), (8, 2722748), (14, 1555856), (16, 1361374), (28, 777928), (32, 680687), (56, 388964), (112, 194482), (224, 97241)]