221235

素因数分解:

$3^1\times 5^1\times 7^3\times {\mathrm{43}}^1$

素因数の和:72

約数の個数: 32

約数和(自身を含む): 422400

約数和(自身を除く): 201165

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 49, 105, 129, 147, 215, 245, 301, 343, 645, 735, 903, 1029, 1505, 1715, 2107, 4515, 5145, 6321, 10535, 14749, 31605, 44247, 73745, 221235]

約数ペア:

[(1, 221235), (3, 73745), (5, 44247), (7, 31605), (15, 14749), (21, 10535), (35, 6321), (43, 5145), (49, 4515), (105, 2107), (129, 1715), (147, 1505), (215, 1029), (245, 903), (301, 735), (343, 645)]