20189720180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{342547}}^1$

素因数の和:342984

約数の個数: 48

約数和(自身を含む): 48570566016

約数和(自身を除く): 28380845836

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 421, 842, 1684, 2105, 2947, 4210, 5894, 8420, 11788, 14735, 29470, 58940, 342547, 685094, 1370188, 1712735, 2397829, 3425470, 4795658, 6850940, 9591316, 11989145, 23978290, 47956580, 144212287, 288424574, 576849148, 721061435, 1009486009, 1442122870, 2018972018, 2884245740, 4037944036, 5047430045, 10094860090, 20189720180]

約数ペア:

[(1, 20189720180), (2, 10094860090), (4, 5047430045), (5, 4037944036), (7, 2884245740), (10, 2018972018), (14, 1442122870), (20, 1009486009), (28, 721061435), (35, 576849148), (70, 288424574), (140, 144212287), (421, 47956580), (842, 23978290), (1684, 11989145), (2105, 9591316), (2947, 6850940), (4210, 4795658), (5894, 3425470), (8420, 2397829), (11788, 1712735), (14735, 1370188), (29470, 685094), (58940, 342547)]