639225

素因数分解:

$3^3\times 5^2\times {\mathrm{947}}^1$

素因数の和:966

約数の個数: 24

約数和(自身を含む): 1175520

約数和(自身を除く): 536295

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 135, 225, 675, 947, 2841, 4735, 8523, 14205, 23675, 25569, 42615, 71025, 127845, 213075, 639225]

約数ペア:

[(1, 639225), (3, 213075), (5, 127845), (9, 71025), (15, 42615), (25, 25569), (27, 23675), (45, 14205), (75, 8523), (135, 4735), (225, 2841), (675, 947)]