21700880

素因数分解:

$2^4\times 5^1\times {\mathrm{271261}}^1$

素因数の和:271274

約数の個数: 20

約数和(自身を含む): 50454732

約数和(自身を除く): 28753852

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271261, 542522, 1085044, 1356305, 2170088, 2712610, 4340176, 5425220, 10850440, 21700880]

約数ペア:

[(1, 21700880), (2, 10850440), (4, 5425220), (5, 4340176), (8, 2712610), (10, 2170088), (16, 1356305), (20, 1085044), (40, 542522), (80, 271261)]