9865000

素因数分解:

$2^3\times 5^4\times {\mathrm{1973}}^1$

素因数の和:1999

約数の個数: 40

約数和(自身を含む): 23125410

約数和(自身を除く): 13260410

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 1973, 2500, 3946, 5000, 7892, 9865, 15784, 19730, 39460, 49325, 78920, 98650, 197300, 246625, 394600, 493250, 986500, 1233125, 1973000, 2466250, 4932500, 9865000]

約数ペア:

[(1, 9865000), (2, 4932500), (4, 2466250), (5, 1973000), (8, 1233125), (10, 986500), (20, 493250), (25, 394600), (40, 246625), (50, 197300), (100, 98650), (125, 78920), (200, 49325), (250, 39460), (500, 19730), (625, 15784), (1000, 9865), (1250, 7892), (1973, 5000), (2500, 3946)]