20503840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{18307}}^1$

素因数の和:18329

約数の個数: 48

約数和(自身を含む): 55363392

約数和(自身を除く): 34859552

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 18307, 36614, 73228, 91535, 128149, 146456, 183070, 256298, 292912, 366140, 512596, 585824, 640745, 732280, 1025192, 1281490, 1464560, 2050384, 2562980, 2929120, 4100768, 5125960, 10251920, 20503840]

約数ペア:

[(1, 20503840), (2, 10251920), (4, 5125960), (5, 4100768), (7, 2929120), (8, 2562980), (10, 2050384), (14, 1464560), (16, 1281490), (20, 1025192), (28, 732280), (32, 640745), (35, 585824), (40, 512596), (56, 366140), (70, 292912), (80, 256298), (112, 183070), (140, 146456), (160, 128149), (224, 91535), (280, 73228), (560, 36614), (1120, 18307)]