18028000

素因数分解:

$2^5\times 5^3\times {\mathrm{4507}}^1$

素因数の和:4532

約数の個数: 48

約数和(自身を含む): 44304624

約数和(自身を除く): 26276624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 4507, 9014, 18028, 22535, 36056, 45070, 72112, 90140, 112675, 144224, 180280, 225350, 360560, 450700, 563375, 721120, 901400, 1126750, 1802800, 2253500, 3605600, 4507000, 9014000, 18028000]

約数ペア:

[(1, 18028000), (2, 9014000), (4, 4507000), (5, 3605600), (8, 2253500), (10, 1802800), (16, 1126750), (20, 901400), (25, 721120), (32, 563375), (40, 450700), (50, 360560), (80, 225350), (100, 180280), (125, 144224), (160, 112675), (200, 90140), (250, 72112), (400, 45070), (500, 36056), (800, 22535), (1000, 18028), (2000, 9014), (4000, 4507)]