20751500

素因数分解:

$2^2\times 5^3\times 7^3\times {\mathrm{11}}^2$

素因数の和:62

約数の個数: 144

約数和(自身を含む): 58094400

約数和(自身を除く): 37342900

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 25, 28, 35, 44, 49, 50, 55, 70, 77, 98, 100, 110, 121, 125, 140, 154, 175, 196, 220, 242, 245, 250, 275, 308, 343, 350, 385, 484, 490, 500, 539, 550, 605, 686, 700, 770, 847, 875, 980, 1078, 1100, 1210, 1225, 1372, 1375, 1540, 1694, 1715, 1750, 1925, 2156, 2420, 2450, 2695, 2750, 3025, 3388, 3430, 3500, 3773, 3850, 4235, 4900, 5390, 5500, 5929, 6050, 6125, 6860, 7546, 7700, 8470, 8575, 9625, 10780, 11858, 12100, 12250, 13475, 15092, 15125, 16940, 17150, 18865, 19250, 21175, 23716, 24500, 26950, 29645, 30250, 34300, 37730, 38500, 41503, 42350, 42875, 53900, 59290, 60500, 67375, 75460, 83006, 84700, 85750, 94325, 105875, 118580, 134750, 148225, 166012, 171500, 188650, 207515, 211750, 269500, 296450, 377300, 415030, 423500, 471625, 592900, 741125, 830060, 943250, 1037575, 1482250, 1886500, 2075150, 2964500, 4150300, 5187875, 10375750, 20751500]

約数ペア:

[(1, 20751500), (2, 10375750), (4, 5187875), (5, 4150300), (7, 2964500), (10, 2075150), (11, 1886500), (14, 1482250), (20, 1037575), (22, 943250), (25, 830060), (28, 741125), (35, 592900), (44, 471625), (49, 423500), (50, 415030), (55, 377300), (70, 296450), (77, 269500), (98, 211750), (100, 207515), (110, 188650), (121, 171500), (125, 166012), (140, 148225), (154, 134750), (175, 118580), (196, 105875), (220, 94325), (242, 85750), (245, 84700), (250, 83006), (275, 75460), (308, 67375), (343, 60500), (350, 59290), (385, 53900), (484, 42875), (490, 42350), (500, 41503), (539, 38500), (550, 37730), (605, 34300), (686, 30250), (700, 29645), (770, 26950), (847, 24500), (875, 23716), (980, 21175), (1078, 19250), (1100, 18865), (1210, 17150), (1225, 16940), (1372, 15125), (1375, 15092), (1540, 13475), (1694, 12250), (1715, 12100), (1750, 11858), (1925, 10780), (2156, 9625), (2420, 8575), (2450, 8470), (2695, 7700), (2750, 7546), (3025, 6860), (3388, 6125), (3430, 6050), (3500, 5929), (3773, 5500), (3850, 5390), (4235, 4900)]