21984800

素因数分解:

$2^5\times 5^2\times {\mathrm{27481}}^1$

素因数の和:27501

約数の個数: 36

約数和(自身を含む): 53672346

約数和(自身を除く): 31687546

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 27481, 54962, 109924, 137405, 219848, 274810, 439696, 549620, 687025, 879392, 1099240, 1374050, 2198480, 2748100, 4396960, 5496200, 10992400, 21984800]

約数ペア:

[(1, 21984800), (2, 10992400), (4, 5496200), (5, 4396960), (8, 2748100), (10, 2198480), (16, 1374050), (20, 1099240), (25, 879392), (32, 687025), (40, 549620), (50, 439696), (80, 274810), (100, 219848), (160, 137405), (200, 109924), (400, 54962), (800, 27481)]