25660000

素因数分解:

$2^5\times 5^4\times {\mathrm{1283}}^1$

素因数の和:1313

約数の個数: 60

約数和(自身を含む): 63176652

約数和(自身を除く): 37516652

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 625, 800, 1000, 1250, 1283, 2000, 2500, 2566, 4000, 5000, 5132, 6415, 10000, 10264, 12830, 20000, 20528, 25660, 32075, 41056, 51320, 64150, 102640, 128300, 160375, 205280, 256600, 320750, 513200, 641500, 801875, 1026400, 1283000, 1603750, 2566000, 3207500, 5132000, 6415000, 12830000, 25660000]

約数ペア:

[(1, 25660000), (2, 12830000), (4, 6415000), (5, 5132000), (8, 3207500), (10, 2566000), (16, 1603750), (20, 1283000), (25, 1026400), (32, 801875), (40, 641500), (50, 513200), (80, 320750), (100, 256600), (125, 205280), (160, 160375), (200, 128300), (250, 102640), (400, 64150), (500, 51320), (625, 41056), (800, 32075), (1000, 25660), (1250, 20528), (1283, 20000), (2000, 12830), (2500, 10264), (2566, 10000), (4000, 6415), (5000, 5132)]