19866609

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2371}}^1$

素因数の和:2410

約数の個数: 36

約数和(自身を含む): 35153040

約数和(自身を除く): 15286431

約数列:

[1, 3, 7, 9, 19, 21, 49, 57, 63, 133, 147, 171, 399, 441, 931, 1197, 2371, 2793, 7113, 8379, 16597, 21339, 45049, 49791, 116179, 135147, 149373, 315343, 348537, 405441, 946029, 1045611, 2207401, 2838087, 6622203, 19866609]

約数ペア:

[(1, 19866609), (3, 6622203), (7, 2838087), (9, 2207401), (19, 1045611), (21, 946029), (49, 405441), (57, 348537), (63, 315343), (133, 149373), (147, 135147), (171, 116179), (399, 49791), (441, 45049), (931, 21339), (1197, 16597), (2371, 8379), (2793, 7113)]