19665513

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2347}}^1$

素因数の和:2386

約数の個数: 36

約数和(自身を含む): 34797360

約数和(自身を除く): 15131847

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 931, 1197, 2347, 2793, 7041, 8379, 16429, 21123, 44593, 49287, 115003, 133779, 147861, 312151, 345009, 401337, 936453, 1035027, 2185057, 2809359, 6555171, 19665513]

約数ペア:

[(1, 19665513), (3, 6555171), (7, 2809359), (9, 2185057), (19, 1035027), (21, 936453), (49, 401337), (57, 345009), (63, 312151), (133, 147861), (147, 133779), (171, 115003), (399, 49287), (441, 44593), (931, 21123), (1197, 16429), (2347, 8379), (2793, 7041)]