19180780

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{9887}}^1$

素因数の和:9993

約数の個数: 24

約数和(自身を含む): 40699008

約数和(自身を除く): 21518228

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 9887, 19774, 39548, 49435, 98870, 197740, 959039, 1918078, 3836156, 4795195, 9590390, 19180780]

約数ペア:

[(1, 19180780), (2, 9590390), (4, 4795195), (5, 3836156), (10, 1918078), (20, 959039), (97, 197740), (194, 98870), (388, 49435), (485, 39548), (970, 19774), (1940, 9887)]