21293000

素因数分解:

$2^3\times 5^3\times {\mathrm{107}}^1\times {\mathrm{199}}^1$

素因数の和:327

約数の個数: 64

約数和(自身を含む): 50544000

約数和(自身を除く): 29251000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 107, 125, 199, 200, 214, 250, 398, 428, 500, 535, 796, 856, 995, 1000, 1070, 1592, 1990, 2140, 2675, 3980, 4280, 4975, 5350, 7960, 9950, 10700, 13375, 19900, 21293, 21400, 24875, 26750, 39800, 42586, 49750, 53500, 85172, 99500, 106465, 107000, 170344, 199000, 212930, 425860, 532325, 851720, 1064650, 2129300, 2661625, 4258600, 5323250, 10646500, 21293000]

約数ペア:

[(1, 21293000), (2, 10646500), (4, 5323250), (5, 4258600), (8, 2661625), (10, 2129300), (20, 1064650), (25, 851720), (40, 532325), (50, 425860), (100, 212930), (107, 199000), (125, 170344), (199, 107000), (200, 106465), (214, 99500), (250, 85172), (398, 53500), (428, 49750), (500, 42586), (535, 39800), (796, 26750), (856, 24875), (995, 21400), (1000, 21293), (1070, 19900), (1592, 13375), (1990, 10700), (2140, 9950), (2675, 7960), (3980, 5350), (4280, 4975)]