221025

素因数分解:

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

素因数の和:441

約数の個数: 24

約数和(自身を含む): 418624

約数和(自身を除く): 197599

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 175, 421, 525, 1263, 2105, 2947, 6315, 8841, 10525, 14735, 31575, 44205, 73675, 221025]

約数ペア:

[(1, 221025), (3, 73675), (5, 44205), (7, 31575), (15, 14735), (21, 10525), (25, 8841), (35, 6315), (75, 2947), (105, 2105), (175, 1263), (421, 525)]