9800

素因数分解:

$2^3\times 5^2\times 7^2$

素因数の和:30

約数の個数: 36

約数和(自身を含む): 26505

約数和(自身を除く): 16705

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 49, 50, 56, 70, 98, 100, 140, 175, 196, 200, 245, 280, 350, 392, 490, 700, 980, 1225, 1400, 1960, 2450, 4900, 9800]

約数ペア:

[(1, 9800), (2, 4900), (4, 2450), (5, 1960), (7, 1400), (8, 1225), (10, 980), (14, 700), (20, 490), (25, 392), (28, 350), (35, 280), (40, 245), (49, 200), (50, 196), (56, 175), (70, 140), (98, 100)]