20213823

素因数分解:

$3^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{691}}^1$

素因数の和:907

約数の個数: 24

約数和(自身を含む): 31555200

約数和(自身を除く): 11341377

約数列:

[1, 3, 7, 21, 49, 147, 199, 597, 691, 1393, 2073, 4179, 4837, 9751, 14511, 29253, 33859, 101577, 137509, 412527, 962563, 2887689, 6737941, 20213823]

約数ペア:

[(1, 20213823), (3, 6737941), (7, 2887689), (21, 962563), (49, 412527), (147, 137509), (199, 101577), (597, 33859), (691, 29253), (1393, 14511), (2073, 9751), (4179, 4837)]