19788580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1321}}^1$

素因数の和:1444

約数の個数: 48

約数和(自身を含む): 47972736

約数和(自身を除く): 28184156

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1321, 1498, 2140, 2642, 2996, 3745, 5284, 6605, 7490, 9247, 13210, 14980, 18494, 26420, 36988, 46235, 92470, 141347, 184940, 282694, 565388, 706735, 989429, 1413470, 1978858, 2826940, 3957716, 4947145, 9894290, 19788580]

約数ペア:

[(1, 19788580), (2, 9894290), (4, 4947145), (5, 3957716), (7, 2826940), (10, 1978858), (14, 1413470), (20, 989429), (28, 706735), (35, 565388), (70, 282694), (107, 184940), (140, 141347), (214, 92470), (428, 46235), (535, 36988), (749, 26420), (1070, 18494), (1321, 14980), (1498, 13210), (2140, 9247), (2642, 7490), (2996, 6605), (3745, 5284)]