20639570

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{6857}}^1$

素因数の和:6914

約数の個数: 32

約数和(自身を含む): 43452288

約数和(自身を除く): 22812718

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 70, 86, 215, 301, 430, 602, 1505, 3010, 6857, 13714, 34285, 47999, 68570, 95998, 239995, 294851, 479990, 589702, 1474255, 2063957, 2948510, 4127914, 10319785, 20639570]

約数ペア:

[(1, 20639570), (2, 10319785), (5, 4127914), (7, 2948510), (10, 2063957), (14, 1474255), (35, 589702), (43, 479990), (70, 294851), (86, 239995), (215, 95998), (301, 68570), (430, 47999), (602, 34285), (1505, 13714), (3010, 6857)]