987800

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{449}}^1$

素因数の和:476

約数の個数: 48

約数和(自身を含む): 2511000

約数和(自身を除く): 1523200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 200, 220, 275, 440, 449, 550, 898, 1100, 1796, 2200, 2245, 3592, 4490, 4939, 8980, 9878, 11225, 17960, 19756, 22450, 24695, 39512, 44900, 49390, 89800, 98780, 123475, 197560, 246950, 493900, 987800]

約数ペア:

[(1, 987800), (2, 493900), (4, 246950), (5, 197560), (8, 123475), (10, 98780), (11, 89800), (20, 49390), (22, 44900), (25, 39512), (40, 24695), (44, 22450), (50, 19756), (55, 17960), (88, 11225), (100, 9878), (110, 8980), (200, 4939), (220, 4490), (275, 3592), (440, 2245), (449, 2200), (550, 1796), (898, 1100)]