2005155

素因数分解:

$3^4\times 5^1\times {\mathrm{4951}}^1$

素因数の和:4968

約数の個数: 20

約数和(自身を含む): 3595152

約数和(自身を除く): 1589997

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 4951, 14853, 24755, 44559, 74265, 133677, 222795, 401031, 668385, 2005155]

約数ペア:

[(1, 2005155), (3, 668385), (5, 401031), (9, 222795), (15, 133677), (27, 74265), (45, 44559), (81, 24755), (135, 14853), (405, 4951)]