18140000

素因数分解:

$2^5\times 5^4\times {\mathrm{907}}^1$

素因数の和:937

約数の個数: 60

約数和(自身を含む): 44676324

約数和(自身を除く): 26536324

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 907, 1000, 1250, 1814, 2000, 2500, 3628, 4000, 4535, 5000, 7256, 9070, 10000, 14512, 18140, 20000, 22675, 29024, 36280, 45350, 72560, 90700, 113375, 145120, 181400, 226750, 362800, 453500, 566875, 725600, 907000, 1133750, 1814000, 2267500, 3628000, 4535000, 9070000, 18140000]

約数ペア:

[(1, 18140000), (2, 9070000), (4, 4535000), (5, 3628000), (8, 2267500), (10, 1814000), (16, 1133750), (20, 907000), (25, 725600), (32, 566875), (40, 453500), (50, 362800), (80, 226750), (100, 181400), (125, 145120), (160, 113375), (200, 90700), (250, 72560), (400, 45350), (500, 36280), (625, 29024), (800, 22675), (907, 20000), (1000, 18140), (1250, 14512), (1814, 10000), (2000, 9070), (2500, 7256), (3628, 5000), (4000, 4535)]