18819920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{4801}}^1$

素因数の和:4828

約数の個数: 60

約数和(自身を含む): 50910804

約数和(自身を除く): 32090884

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 4801, 9602, 19204, 24005, 33607, 38408, 48010, 67214, 76816, 96020, 134428, 168035, 192040, 235249, 268856, 336070, 384080, 470498, 537712, 672140, 940996, 1176245, 1344280, 1881992, 2352490, 2688560, 3763984, 4704980, 9409960, 18819920]

約数ペア:

[(1, 18819920), (2, 9409960), (4, 4704980), (5, 3763984), (7, 2688560), (8, 2352490), (10, 1881992), (14, 1344280), (16, 1176245), (20, 940996), (28, 672140), (35, 537712), (40, 470498), (49, 384080), (56, 336070), (70, 268856), (80, 235249), (98, 192040), (112, 168035), (140, 134428), (196, 96020), (245, 76816), (280, 67214), (392, 48010), (490, 38408), (560, 33607), (784, 24005), (980, 19204), (1960, 9602), (3920, 4801)]