28870780

素因数分解:

$2^2\times 5^1\times {\mathrm{359}}^1\times {\mathrm{4021}}^1$

素因数の和:4389

約数の個数: 24

約数和(自身を含む): 60812640

約数和(自身を除く): 31941860

約数列:

[1, 2, 4, 5, 10, 20, 359, 718, 1436, 1795, 3590, 4021, 7180, 8042, 16084, 20105, 40210, 80420, 1443539, 2887078, 5774156, 7217695, 14435390, 28870780]

約数ペア:

[(1, 28870780), (2, 14435390), (4, 7217695), (5, 5774156), (10, 2887078), (20, 1443539), (359, 80420), (718, 40210), (1436, 20105), (1795, 16084), (3590, 8042), (4021, 7180)]