20909386

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{421}}^1\times {\mathrm{1307}}^1$

素因数の和:1749

約数の個数: 16

約数和(自身を含む): 33118560

約数和(自身を除く): 12209174

約数列:

[1, 2, 19, 38, 421, 842, 1307, 2614, 7999, 15998, 24833, 49666, 550247, 1100494, 10454693, 20909386]

約数ペア:

[(1, 20909386), (2, 10454693), (19, 1100494), (38, 550247), (421, 49666), (842, 24833), (1307, 15998), (2614, 7999)]