78950000

素因数分解:

$2^4\times 5^5\times {\mathrm{1579}}^1$

素因数の和:1612

約数の個数: 60

約数和(自身を含む): 191315880

約数和(自身を除く): 112365880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 1579, 2000, 2500, 3125, 3158, 5000, 6250, 6316, 7895, 10000, 12500, 12632, 15790, 25000, 25264, 31580, 39475, 50000, 63160, 78950, 126320, 157900, 197375, 315800, 394750, 631600, 789500, 986875, 1579000, 1973750, 3158000, 3947500, 4934375, 7895000, 9868750, 15790000, 19737500, 39475000, 78950000]

約数ペア:

[(1, 78950000), (2, 39475000), (4, 19737500), (5, 15790000), (8, 9868750), (10, 7895000), (16, 4934375), (20, 3947500), (25, 3158000), (40, 1973750), (50, 1579000), (80, 986875), (100, 789500), (125, 631600), (200, 394750), (250, 315800), (400, 197375), (500, 157900), (625, 126320), (1000, 78950), (1250, 63160), (1579, 50000), (2000, 39475), (2500, 31580), (3125, 25264), (3158, 25000), (5000, 15790), (6250, 12632), (6316, 12500), (7895, 10000)]