77972020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{556943}}^1$

素因数の和:556959

約数の個数: 24

約数和(自身を含む): 187133184

約数和(自身を除く): 109161164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 556943, 1113886, 2227772, 2784715, 3898601, 5569430, 7797202, 11138860, 15594404, 19493005, 38986010, 77972020]

約数ペア:

[(1, 77972020), (2, 38986010), (4, 19493005), (5, 15594404), (7, 11138860), (10, 7797202), (14, 5569430), (20, 3898601), (28, 2784715), (35, 2227772), (70, 1113886), (140, 556943)]