20437500

素因数分解:

$2^2\times 3^1\times 5^6\times {\mathrm{109}}^1$

素因数の和:146

約数の個数: 84

約数和(自身を含む): 60155480

約数和(自身を除く): 39717980

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 109, 125, 150, 218, 250, 300, 327, 375, 436, 500, 545, 625, 654, 750, 1090, 1250, 1308, 1500, 1635, 1875, 2180, 2500, 2725, 3125, 3270, 3750, 5450, 6250, 6540, 7500, 8175, 9375, 10900, 12500, 13625, 15625, 16350, 18750, 27250, 31250, 32700, 37500, 40875, 46875, 54500, 62500, 68125, 81750, 93750, 136250, 163500, 187500, 204375, 272500, 340625, 408750, 681250, 817500, 1021875, 1362500, 1703125, 2043750, 3406250, 4087500, 5109375, 6812500, 10218750, 20437500]

約数ペア:

[(1, 20437500), (2, 10218750), (3, 6812500), (4, 5109375), (5, 4087500), (6, 3406250), (10, 2043750), (12, 1703125), (15, 1362500), (20, 1021875), (25, 817500), (30, 681250), (50, 408750), (60, 340625), (75, 272500), (100, 204375), (109, 187500), (125, 163500), (150, 136250), (218, 93750), (250, 81750), (300, 68125), (327, 62500), (375, 54500), (436, 46875), (500, 40875), (545, 37500), (625, 32700), (654, 31250), (750, 27250), (1090, 18750), (1250, 16350), (1308, 15625), (1500, 13625), (1635, 12500), (1875, 10900), (2180, 9375), (2500, 8175), (2725, 7500), (3125, 6540), (3270, 6250), (3750, 5450)]