1989200

素因数分解:

$2^4\times 5^2\times {\mathrm{4973}}^1$

素因数の和:4991

約数の個数: 30

約数和(自身を含む): 4780014

約数和(自身を除く): 2790814

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 4973, 9946, 19892, 24865, 39784, 49730, 79568, 99460, 124325, 198920, 248650, 397840, 497300, 994600, 1989200]

約数ペア:

[(1, 1989200), (2, 994600), (4, 497300), (5, 397840), (8, 248650), (10, 198920), (16, 124325), (20, 99460), (25, 79568), (40, 49730), (50, 39784), (80, 24865), (100, 19892), (200, 9946), (400, 4973)]