19943840

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{17807}}^1$

素因数の和:17829

約数の個数: 48

約数和(自身を含む): 53851392

約数和(自身を除く): 33907552

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, 17807, 35614, 71228, 89035, 124649, 142456, 178070, 249298, 284912, 356140, 498596, 569824, 623245, 712280, 997192, 1246490, 1424560, 1994384, 2492980, 2849120, 3988768, 4985960, 9971920, 19943840]

約数ペア:

[(1, 19943840), (2, 9971920), (4, 4985960), (5, 3988768), (7, 2849120), (8, 2492980), (10, 1994384), (14, 1424560), (16, 1246490), (20, 997192), (28, 712280), (32, 623245), (35, 569824), (40, 498596), (56, 356140), (70, 284912), (80, 249298), (112, 178070), (140, 142456), (160, 124649), (224, 89035), (280, 71228), (560, 35614), (1120, 17807)]