61997020

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{28439}}^1$

素因数の和:28557

約数の個数: 24

約数和(自身を含む): 131392800

約数和(自身を除く): 69395780

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 28439, 56878, 113756, 142195, 284390, 568780, 3099851, 6199702, 12399404, 15499255, 30998510, 61997020]

約数ペア:

[(1, 61997020), (2, 30998510), (4, 15499255), (5, 12399404), (10, 6199702), (20, 3099851), (109, 568780), (218, 284390), (436, 142195), (545, 113756), (1090, 56878), (2180, 28439)]