18157940

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{29287}}^1$

素因数の和:29327

約数の個数: 24

約数和(自身を含む): 39363072

約数和(自身を除く): 21205132

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 29287, 58574, 117148, 146435, 292870, 585740, 907897, 1815794, 3631588, 4539485, 9078970, 18157940]

約数ペア:

[(1, 18157940), (2, 9078970), (4, 4539485), (5, 3631588), (10, 1815794), (20, 907897), (31, 585740), (62, 292870), (124, 146435), (155, 117148), (310, 58574), (620, 29287)]