19780880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{35323}}^1$

素因数の和:35343

約数の個数: 40

約数和(自身を含む): 52562112

約数和(自身を除く): 32781232

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 35323, 70646, 141292, 176615, 247261, 282584, 353230, 494522, 565168, 706460, 989044, 1236305, 1412920, 1978088, 2472610, 2825840, 3956176, 4945220, 9890440, 19780880]

約数ペア:

[(1, 19780880), (2, 9890440), (4, 4945220), (5, 3956176), (7, 2825840), (8, 2472610), (10, 1978088), (14, 1412920), (16, 1236305), (20, 989044), (28, 706460), (35, 565168), (40, 494522), (56, 353230), (70, 282584), (80, 247261), (112, 176615), (140, 141292), (280, 70646), (560, 35323)]