4910000

素因数分解:

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

素因数の和:519

約数の個数: 50

約数和(自身を含む): 11911812

約数和(自身を除く): 7001812

約数列:

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

約数ペア:

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