218520260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1560859}}^1$

素因数の和:1560875

約数の個数: 24

約数和(自身を含む): 524448960

約数和(自身を除く): 305928700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1560859, 3121718, 6243436, 7804295, 10926013, 15608590, 21852026, 31217180, 43704052, 54630065, 109260130, 218520260]

約数ペア:

[(1, 218520260), (2, 109260130), (4, 54630065), (5, 43704052), (7, 31217180), (10, 21852026), (14, 15608590), (20, 10926013), (28, 7804295), (35, 6243436), (70, 3121718), (140, 1560859)]