397122940

素因数分解:

$2^2\times 5^1\times {\mathrm{5077}}^1\times {\mathrm{3911}}^1$

素因数の和:8997

約数の個数: 24

約数和(自身を含む): 834335712

約数和(自身を除く): 437212772

約数列:

[1, 2, 4, 5, 10, 20, 3911, 5077, 7822, 10154, 15644, 19555, 20308, 25385, 39110, 50770, 78220, 101540, 19856147, 39712294, 79424588, 99280735, 198561470, 397122940]

約数ペア:

[(1, 397122940), (2, 198561470), (4, 99280735), (5, 79424588), (10, 39712294), (20, 19856147), (3911, 101540), (5077, 78220), (7822, 50770), (10154, 39110), (15644, 25385), (19555, 20308)]