21240394

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{109}}^1\times {\mathrm{449}}^1$

素因数の和:598

約数の個数: 32

約数和(自身を含む): 38016000

約数和(自身を除く): 16775606

約数列:

[1, 2, 7, 14, 31, 62, 109, 217, 218, 434, 449, 763, 898, 1526, 3143, 3379, 6286, 6758, 13919, 23653, 27838, 47306, 48941, 97433, 97882, 194866, 342587, 685174, 1517171, 3034342, 10620197, 21240394]

約数ペア:

[(1, 21240394), (2, 10620197), (7, 3034342), (14, 1517171), (31, 685174), (62, 342587), (109, 194866), (217, 97882), (218, 97433), (434, 48941), (449, 47306), (763, 27838), (898, 23653), (1526, 13919), (3143, 6758), (3379, 6286)]