18880155

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{19979}}^1$

素因数の和:20000

約数の個数: 32

約数和(自身を含む): 38361600

約数和(自身を除く): 19481445

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 135, 189, 315, 945, 19979, 59937, 99895, 139853, 179811, 299685, 419559, 539433, 699265, 899055, 1258677, 2097795, 2697165, 3776031, 6293385, 18880155]

約数ペア:

[(1, 18880155), (3, 6293385), (5, 3776031), (7, 2697165), (9, 2097795), (15, 1258677), (21, 899055), (27, 699265), (35, 539433), (45, 419559), (63, 299685), (105, 179811), (135, 139853), (189, 99895), (315, 59937), (945, 19979)]