21066538

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{1291}}^1$

素因数の和:1533

約数の個数: 16

約数和(自身を含む): 32558400

約数和(自身を除く): 11491862

約数列:

[1, 2, 41, 82, 199, 398, 1291, 2582, 8159, 16318, 52931, 105862, 256909, 513818, 10533269, 21066538]

約数ペア:

[(1, 21066538), (2, 10533269), (41, 513818), (82, 256909), (199, 105862), (398, 52931), (1291, 16318), (2582, 8159)]