628000

素因数分解:

$2^5\times 5^3\times {\mathrm{157}}^1$

素因数の和:182

約数の個数: 48

約数和(自身を含む): 1552824

約数和(自身を除く): 924824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 157, 160, 200, 250, 314, 400, 500, 628, 785, 800, 1000, 1256, 1570, 2000, 2512, 3140, 3925, 4000, 5024, 6280, 7850, 12560, 15700, 19625, 25120, 31400, 39250, 62800, 78500, 125600, 157000, 314000, 628000]

約数ペア:

[(1, 628000), (2, 314000), (4, 157000), (5, 125600), (8, 78500), (10, 62800), (16, 39250), (20, 31400), (25, 25120), (32, 19625), (40, 15700), (50, 12560), (80, 7850), (100, 6280), (125, 5024), (157, 4000), (160, 3925), (200, 3140), (250, 2512), (314, 2000), (400, 1570), (500, 1256), (628, 1000), (785, 800)]