20338875

素因数分解:

$3^2\times 5^3\times {\mathrm{101}}^1\times {\mathrm{179}}^1$

素因数の和:301

約数の個数: 48

約数和(自身を含む): 37234080

約数和(自身を除く): 16895205

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 101, 125, 179, 225, 303, 375, 505, 537, 895, 909, 1125, 1515, 1611, 2525, 2685, 4475, 4545, 7575, 8055, 12625, 13425, 18079, 22375, 22725, 37875, 40275, 54237, 67125, 90395, 113625, 162711, 201375, 271185, 451975, 813555, 1355925, 2259875, 4067775, 6779625, 20338875]

約数ペア:

[(1, 20338875), (3, 6779625), (5, 4067775), (9, 2259875), (15, 1355925), (25, 813555), (45, 451975), (75, 271185), (101, 201375), (125, 162711), (179, 113625), (225, 90395), (303, 67125), (375, 54237), (505, 40275), (537, 37875), (895, 22725), (909, 22375), (1125, 18079), (1515, 13425), (1611, 12625), (2525, 8055), (2685, 7575), (4475, 4545)]