81988000

素因数分解:

$2^5\times 5^3\times {\mathrm{103}}^1\times {\mathrm{199}}^1$

素因数の和:327

約数の個数: 96

約数和(自身を含む): 204422400

約数和(自身を除く): 122434400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 103, 125, 160, 199, 200, 206, 250, 398, 400, 412, 500, 515, 796, 800, 824, 995, 1000, 1030, 1592, 1648, 1990, 2000, 2060, 2575, 3184, 3296, 3980, 4000, 4120, 4975, 5150, 6368, 7960, 8240, 9950, 10300, 12875, 15920, 16480, 19900, 20497, 20600, 24875, 25750, 31840, 39800, 40994, 41200, 49750, 51500, 79600, 81988, 82400, 99500, 102485, 103000, 159200, 163976, 199000, 204970, 206000, 327952, 398000, 409940, 412000, 512425, 655904, 796000, 819880, 1024850, 1639760, 2049700, 2562125, 3279520, 4099400, 5124250, 8198800, 10248500, 16397600, 20497000, 40994000, 81988000]

約数ペア:

[(1, 81988000), (2, 40994000), (4, 20497000), (5, 16397600), (8, 10248500), (10, 8198800), (16, 5124250), (20, 4099400), (25, 3279520), (32, 2562125), (40, 2049700), (50, 1639760), (80, 1024850), (100, 819880), (103, 796000), (125, 655904), (160, 512425), (199, 412000), (200, 409940), (206, 398000), (250, 327952), (398, 206000), (400, 204970), (412, 199000), (500, 163976), (515, 159200), (796, 103000), (800, 102485), (824, 99500), (995, 82400), (1000, 81988), (1030, 79600), (1592, 51500), (1648, 49750), (1990, 41200), (2000, 40994), (2060, 39800), (2575, 31840), (3184, 25750), (3296, 24875), (3980, 20600), (4000, 20497), (4120, 19900), (4975, 16480), (5150, 15920), (6368, 12875), (7960, 10300), (8240, 9950)]