19909323

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4451}}^1$

素因数の和:4535

約数の個数: 24

約数和(自身を含む): 33336576

約数和(自身を除く): 13427253

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4451, 4473, 13353, 31157, 40059, 93471, 280413, 316021, 948063, 2212147, 2844189, 6636441, 19909323]

約数ペア:

[(1, 19909323), (3, 6636441), (7, 2844189), (9, 2212147), (21, 948063), (63, 316021), (71, 280413), (213, 93471), (497, 40059), (639, 31157), (1491, 13353), (4451, 4473)]