7890820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{359}}^1$

素因数の和:532

約数の個数: 48

約数和(自身を含む): 19111680

約数和(自身を除く): 11220860

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 359, 628, 718, 785, 1099, 1436, 1570, 1795, 2198, 2513, 3140, 3590, 4396, 5026, 5495, 7180, 10052, 10990, 12565, 21980, 25130, 50260, 56363, 112726, 225452, 281815, 394541, 563630, 789082, 1127260, 1578164, 1972705, 3945410, 7890820]

約数ペア:

[(1, 7890820), (2, 3945410), (4, 1972705), (5, 1578164), (7, 1127260), (10, 789082), (14, 563630), (20, 394541), (28, 281815), (35, 225452), (70, 112726), (140, 56363), (157, 50260), (314, 25130), (359, 21980), (628, 12565), (718, 10990), (785, 10052), (1099, 7180), (1436, 5495), (1570, 5026), (1795, 4396), (2198, 3590), (2513, 3140)]