2921205

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{647}}^1$

素因数の和:705

約数の個数: 32

約数和(自身を含む): 5474304

約数和(自身を除く): 2553099

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 105, 129, 215, 301, 645, 647, 903, 1505, 1941, 3235, 4515, 4529, 9705, 13587, 22645, 27821, 67935, 83463, 139105, 194747, 417315, 584241, 973735, 2921205]

約数ペア:

[(1, 2921205), (3, 973735), (5, 584241), (7, 417315), (15, 194747), (21, 139105), (35, 83463), (43, 67935), (105, 27821), (129, 22645), (215, 13587), (301, 9705), (645, 4529), (647, 4515), (903, 3235), (1505, 1941)]