9820000

素因数分解:

$2^5\times 5^4\times {\mathrm{491}}^1$

素因数の和:521

約数の個数: 60

約数和(自身を含む): 24207876

約数和(自身を除く): 14387876

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 491, 500, 625, 800, 982, 1000, 1250, 1964, 2000, 2455, 2500, 3928, 4000, 4910, 5000, 7856, 9820, 10000, 12275, 15712, 19640, 20000, 24550, 39280, 49100, 61375, 78560, 98200, 122750, 196400, 245500, 306875, 392800, 491000, 613750, 982000, 1227500, 1964000, 2455000, 4910000, 9820000]

約数ペア:

[(1, 9820000), (2, 4910000), (4, 2455000), (5, 1964000), (8, 1227500), (10, 982000), (16, 613750), (20, 491000), (25, 392800), (32, 306875), (40, 245500), (50, 196400), (80, 122750), (100, 98200), (125, 78560), (160, 61375), (200, 49100), (250, 39280), (400, 24550), (491, 20000), (500, 19640), (625, 15712), (800, 12275), (982, 10000), (1000, 9820), (1250, 7856), (1964, 5000), (2000, 4910), (2455, 4000), (2500, 3928)]