20990162

素因数分解:

$2^1\times {\mathrm{31}}^2\times {\mathrm{67}}^1\times {\mathrm{163}}^1$

素因数の和:294

約数の個数: 24

約数和(自身を含む): 33221808

約数和(自身を除く): 12231646

約数列:

[1, 2, 31, 62, 67, 134, 163, 326, 961, 1922, 2077, 4154, 5053, 10106, 10921, 21842, 64387, 128774, 156643, 313286, 338551, 677102, 10495081, 20990162]

約数ペア:

[(1, 20990162), (2, 10495081), (31, 677102), (62, 338551), (67, 313286), (134, 156643), (163, 128774), (326, 64387), (961, 21842), (1922, 10921), (2077, 10106), (4154, 5053)]