19216431

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{193}}^1$

素因数の和:272

約数の個数: 48

約数和(自身を含む): 32200896

約数和(自身を除く): 12984465

約数列:

[1, 3, 9, 13, 23, 37, 39, 69, 111, 117, 193, 207, 299, 333, 481, 579, 851, 897, 1443, 1737, 2509, 2553, 2691, 4329, 4439, 7141, 7527, 7659, 11063, 13317, 21423, 22581, 33189, 39951, 57707, 64269, 92833, 99567, 164243, 173121, 278499, 492729, 519363, 835497, 1478187, 2135159, 6405477, 19216431]

約数ペア:

[(1, 19216431), (3, 6405477), (9, 2135159), (13, 1478187), (23, 835497), (37, 519363), (39, 492729), (69, 278499), (111, 173121), (117, 164243), (193, 99567), (207, 92833), (299, 64269), (333, 57707), (481, 39951), (579, 33189), (851, 22581), (897, 21423), (1443, 13317), (1737, 11063), (2509, 7659), (2553, 7527), (2691, 7141), (4329, 4439)]