21055500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{4679}}^1$

素因数の和:4704

約数の個数: 72

約数和(自身を含む): 66437280

約数和(自身を除く): 45381780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 125, 150, 180, 225, 250, 300, 375, 450, 500, 750, 900, 1125, 1500, 2250, 4500, 4679, 9358, 14037, 18716, 23395, 28074, 42111, 46790, 56148, 70185, 84222, 93580, 116975, 140370, 168444, 210555, 233950, 280740, 350925, 421110, 467900, 584875, 701850, 842220, 1052775, 1169750, 1403700, 1754625, 2105550, 2339500, 3509250, 4211100, 5263875, 7018500, 10527750, 21055500]

約数ペア:

[(1, 21055500), (2, 10527750), (3, 7018500), (4, 5263875), (5, 4211100), (6, 3509250), (9, 2339500), (10, 2105550), (12, 1754625), (15, 1403700), (18, 1169750), (20, 1052775), (25, 842220), (30, 701850), (36, 584875), (45, 467900), (50, 421110), (60, 350925), (75, 280740), (90, 233950), (100, 210555), (125, 168444), (150, 140370), (180, 116975), (225, 93580), (250, 84222), (300, 70185), (375, 56148), (450, 46790), (500, 42111), (750, 28074), (900, 23395), (1125, 18716), (1500, 14037), (2250, 9358), (4500, 4679)]