21990042

素因数分解:

$2^1\times 3^5\times {\mathrm{45247}}^1$

素因数の和:45264

約数の個数: 24

約数和(自身を含む): 49410816

約数和(自身を除く): 27420774

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 243, 486, 45247, 90494, 135741, 271482, 407223, 814446, 1221669, 2443338, 3665007, 7330014, 10995021, 21990042]

約数ペア:

[(1, 21990042), (2, 10995021), (3, 7330014), (6, 3665007), (9, 2443338), (18, 1221669), (27, 814446), (54, 407223), (81, 271482), (162, 135741), (243, 90494), (486, 45247)]