208640440

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{33223}}^1$

素因数の和:33391

約数の個数: 32

約数和(自身を含む): 472445280

約数和(自身を除く): 263804840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 33223, 66446, 132892, 166115, 265784, 332230, 664460, 1328920, 5216011, 10432022, 20864044, 26080055, 41728088, 52160110, 104320220, 208640440]

約数ペア:

[(1, 208640440), (2, 104320220), (4, 52160110), (5, 41728088), (8, 26080055), (10, 20864044), (20, 10432022), (40, 5216011), (157, 1328920), (314, 664460), (628, 332230), (785, 265784), (1256, 166115), (1570, 132892), (3140, 66446), (6280, 33223)]