20169735

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{181}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 37739520

約数和(自身を除く): 17569785

約数列:

[1, 3, 5, 15, 17, 19, 23, 51, 57, 69, 85, 95, 115, 181, 255, 285, 323, 345, 391, 437, 543, 905, 969, 1173, 1311, 1615, 1955, 2185, 2715, 3077, 3439, 4163, 4845, 5865, 6555, 7429, 9231, 10317, 12489, 15385, 17195, 20815, 22287, 37145, 46155, 51585, 58463, 62445, 70771, 79097, 111435, 175389, 212313, 237291, 292315, 353855, 395485, 876945, 1061565, 1186455, 1344649, 4033947, 6723245, 20169735]

約数ペア:

[(1, 20169735), (3, 6723245), (5, 4033947), (15, 1344649), (17, 1186455), (19, 1061565), (23, 876945), (51, 395485), (57, 353855), (69, 292315), (85, 237291), (95, 212313), (115, 175389), (181, 111435), (255, 79097), (285, 70771), (323, 62445), (345, 58463), (391, 51585), (437, 46155), (543, 37145), (905, 22287), (969, 20815), (1173, 17195), (1311, 15385), (1615, 12489), (1955, 10317), (2185, 9231), (2715, 7429), (3077, 6555), (3439, 5865), (4163, 4845)]