40657390

素因数分解:

$2^1\times 5^1\times {\mathrm{401}}^1\times {\mathrm{10139}}^1$

素因数の和:10547

約数の個数: 16

約数和(自身を含む): 73373040

約数和(自身を除く): 32715650

約数列:

[1, 2, 5, 10, 401, 802, 2005, 4010, 10139, 20278, 50695, 101390, 4065739, 8131478, 20328695, 40657390]

約数ペア:

[(1, 40657390), (2, 20328695), (5, 8131478), (10, 4065739), (401, 101390), (802, 50695), (2005, 20278), (4010, 10139)]