21279750

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{17}}^1\times {\mathrm{1669}}^1$

素因数の和:1706

約数の個数: 64

約数和(自身を含む): 56272320

約数和(自身を除く): 34992570

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 25, 30, 34, 50, 51, 75, 85, 102, 125, 150, 170, 250, 255, 375, 425, 510, 750, 850, 1275, 1669, 2125, 2550, 3338, 4250, 5007, 6375, 8345, 10014, 12750, 16690, 25035, 28373, 41725, 50070, 56746, 83450, 85119, 125175, 141865, 170238, 208625, 250350, 283730, 417250, 425595, 625875, 709325, 851190, 1251750, 1418650, 2127975, 3546625, 4255950, 7093250, 10639875, 21279750]

約数ペア:

[(1, 21279750), (2, 10639875), (3, 7093250), (5, 4255950), (6, 3546625), (10, 2127975), (15, 1418650), (17, 1251750), (25, 851190), (30, 709325), (34, 625875), (50, 425595), (51, 417250), (75, 283730), (85, 250350), (102, 208625), (125, 170238), (150, 141865), (170, 125175), (250, 85119), (255, 83450), (375, 56746), (425, 50070), (510, 41725), (750, 28373), (850, 25035), (1275, 16690), (1669, 12750), (2125, 10014), (2550, 8345), (3338, 6375), (4250, 5007)]