21334480

素因数分解:

$2^4\times 5^1\times {\mathrm{266681}}^1$

素因数の和:266694

約数の個数: 20

約数和(自身を含む): 49602852

約数和(自身を除く): 28268372

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 266681, 533362, 1066724, 1333405, 2133448, 2666810, 4266896, 5333620, 10667240, 21334480]

約数ペア:

[(1, 21334480), (2, 10667240), (4, 5333620), (5, 4266896), (8, 2666810), (10, 2133448), (16, 1333405), (20, 1066724), (40, 533362), (80, 266681)]