21370000

素因数分解:

$2^4\times 5^4\times {\mathrm{2137}}^1$

素因数の和:2165

約数の個数: 50

約数和(自身を含む): 51763118

約数和(自身を除く): 30393118

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, 2137, 2500, 4274, 5000, 8548, 10000, 10685, 17096, 21370, 34192, 42740, 53425, 85480, 106850, 170960, 213700, 267125, 427400, 534250, 854800, 1068500, 1335625, 2137000, 2671250, 4274000, 5342500, 10685000, 21370000]

約数ペア:

[(1, 21370000), (2, 10685000), (4, 5342500), (5, 4274000), (8, 2671250), (10, 2137000), (16, 1335625), (20, 1068500), (25, 854800), (40, 534250), (50, 427400), (80, 267125), (100, 213700), (125, 170960), (200, 106850), (250, 85480), (400, 53425), (500, 42740), (625, 34192), (1000, 21370), (1250, 17096), (2000, 10685), (2137, 10000), (2500, 8548), (4274, 5000)]