49870000

素因数分解:

$2^4\times 5^4\times {\mathrm{4987}}^1$

素因数の和:5015

約数の個数: 50

約数和(自身を含む): 120764468

約数和(自身を除く): 70894468

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 4987, 5000, 9974, 10000, 19948, 24935, 39896, 49870, 79792, 99740, 124675, 199480, 249350, 398960, 498700, 623375, 997400, 1246750, 1994800, 2493500, 3116875, 4987000, 6233750, 9974000, 12467500, 24935000, 49870000]

約数ペア:

[(1, 49870000), (2, 24935000), (4, 12467500), (5, 9974000), (8, 6233750), (10, 4987000), (16, 3116875), (20, 2493500), (25, 1994800), (40, 1246750), (50, 997400), (80, 623375), (100, 498700), (125, 398960), (200, 249350), (250, 199480), (400, 124675), (500, 99740), (625, 79792), (1000, 49870), (1250, 39896), (2000, 24935), (2500, 19948), (4987, 10000), (5000, 9974)]