21517160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{76847}}^1$

素因数の和:76865

約数の個数: 32

約数和(自身を含む): 55330560

約数和(自身を除く): 33813400

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 76847, 153694, 307388, 384235, 537929, 614776, 768470, 1075858, 1536940, 2151716, 2689645, 3073880, 4303432, 5379290, 10758580, 21517160]

約数ペア:

[(1, 21517160), (2, 10758580), (4, 5379290), (5, 4303432), (7, 3073880), (8, 2689645), (10, 2151716), (14, 1536940), (20, 1075858), (28, 768470), (35, 614776), (40, 537929), (56, 384235), (70, 307388), (140, 153694), (280, 76847)]