21724000

素因数分解:

$2^5\times 5^3\times {\mathrm{5431}}^1$

素因数の和:5456

約数の個数: 48

約数和(自身を含む): 53385696

約数和(自身を除く): 31661696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 5431, 10862, 21724, 27155, 43448, 54310, 86896, 108620, 135775, 173792, 217240, 271550, 434480, 543100, 678875, 868960, 1086200, 1357750, 2172400, 2715500, 4344800, 5431000, 10862000, 21724000]

約数ペア:

[(1, 21724000), (2, 10862000), (4, 5431000), (5, 4344800), (8, 2715500), (10, 2172400), (16, 1357750), (20, 1086200), (25, 868960), (32, 678875), (40, 543100), (50, 434480), (80, 271550), (100, 217240), (125, 173792), (160, 135775), (200, 108620), (250, 86896), (400, 54310), (500, 43448), (800, 27155), (1000, 21724), (2000, 10862), (4000, 5431)]