21205406

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{10529}}^1$

素因数の和:10603

約数の個数: 16

約数和(自身を含む): 34117200

約数和(自身を除く): 12911794

約数列:

[1, 2, 19, 38, 53, 106, 1007, 2014, 10529, 21058, 200051, 400102, 558037, 1116074, 10602703, 21205406]

約数ペア:

[(1, 21205406), (2, 10602703), (19, 1116074), (38, 558037), (53, 400102), (106, 200051), (1007, 21058), (2014, 10529)]