1989225

素因数分解:

$3^3\times 5^2\times 7^1\times {\mathrm{421}}^1$

素因数の和:447

約数の個数: 48

約数和(自身を含む): 4186240

約数和(自身を除く): 2197015

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 27, 35, 45, 63, 75, 105, 135, 175, 189, 225, 315, 421, 525, 675, 945, 1263, 1575, 2105, 2947, 3789, 4725, 6315, 8841, 10525, 11367, 14735, 18945, 26523, 31575, 44205, 56835, 73675, 79569, 94725, 132615, 221025, 284175, 397845, 663075, 1989225]

約数ペア:

[(1, 1989225), (3, 663075), (5, 397845), (7, 284175), (9, 221025), (15, 132615), (21, 94725), (25, 79569), (27, 73675), (35, 56835), (45, 44205), (63, 31575), (75, 26523), (105, 18945), (135, 14735), (175, 11367), (189, 10525), (225, 8841), (315, 6315), (421, 4725), (525, 3789), (675, 2947), (945, 2105), (1263, 1575)]