20857500

素因数分解:

$2^2\times 3^4\times 5^4\times {\mathrm{103}}^1$

素因数の和:139

約数の個数: 150

約数和(自身を含む): 68796728

約数和(自身を除く): 47939228

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 81, 90, 100, 103, 108, 125, 135, 150, 162, 180, 206, 225, 250, 270, 300, 309, 324, 375, 405, 412, 450, 500, 515, 540, 618, 625, 675, 750, 810, 900, 927, 1030, 1125, 1236, 1250, 1350, 1500, 1545, 1620, 1854, 1875, 2025, 2060, 2250, 2500, 2575, 2700, 2781, 3090, 3375, 3708, 3750, 4050, 4500, 4635, 5150, 5562, 5625, 6180, 6750, 7500, 7725, 8100, 8343, 9270, 10125, 10300, 11124, 11250, 12875, 13500, 13905, 15450, 16686, 16875, 18540, 20250, 22500, 23175, 25750, 27810, 30900, 33372, 33750, 38625, 40500, 41715, 46350, 50625, 51500, 55620, 64375, 67500, 69525, 77250, 83430, 92700, 101250, 115875, 128750, 139050, 154500, 166860, 193125, 202500, 208575, 231750, 257500, 278100, 347625, 386250, 417150, 463500, 579375, 695250, 772500, 834300, 1042875, 1158750, 1390500, 1738125, 2085750, 2317500, 3476250, 4171500, 5214375, 6952500, 10428750, 20857500]

約数ペア:

[(1, 20857500), (2, 10428750), (3, 6952500), (4, 5214375), (5, 4171500), (6, 3476250), (9, 2317500), (10, 2085750), (12, 1738125), (15, 1390500), (18, 1158750), (20, 1042875), (25, 834300), (27, 772500), (30, 695250), (36, 579375), (45, 463500), (50, 417150), (54, 386250), (60, 347625), (75, 278100), (81, 257500), (90, 231750), (100, 208575), (103, 202500), (108, 193125), (125, 166860), (135, 154500), (150, 139050), (162, 128750), (180, 115875), (206, 101250), (225, 92700), (250, 83430), (270, 77250), (300, 69525), (309, 67500), (324, 64375), (375, 55620), (405, 51500), (412, 50625), (450, 46350), (500, 41715), (515, 40500), (540, 38625), (618, 33750), (625, 33372), (675, 30900), (750, 27810), (810, 25750), (900, 23175), (927, 22500), (1030, 20250), (1125, 18540), (1236, 16875), (1250, 16686), (1350, 15450), (1500, 13905), (1545, 13500), (1620, 12875), (1854, 11250), (1875, 11124), (2025, 10300), (2060, 10125), (2250, 9270), (2500, 8343), (2575, 8100), (2700, 7725), (2781, 7500), (3090, 6750), (3375, 6180), (3708, 5625), (3750, 5562), (4050, 5150), (4500, 4635)]