21538000

素因数分解:

$2^4\times 5^3\times {\mathrm{11}}^2\times {\mathrm{89}}^1$

素因数の和:134

約数の個数: 120

約数和(自身を含む): 57886920

約数和(自身を除く): 36348920

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 80, 88, 89, 100, 110, 121, 125, 176, 178, 200, 220, 242, 250, 275, 356, 400, 440, 445, 484, 500, 550, 605, 712, 880, 890, 968, 979, 1000, 1100, 1210, 1375, 1424, 1780, 1936, 1958, 2000, 2200, 2225, 2420, 2750, 3025, 3560, 3916, 4400, 4450, 4840, 4895, 5500, 6050, 7120, 7832, 8900, 9680, 9790, 10769, 11000, 11125, 12100, 15125, 15664, 17800, 19580, 21538, 22000, 22250, 24200, 24475, 30250, 35600, 39160, 43076, 44500, 48400, 48950, 53845, 60500, 78320, 86152, 89000, 97900, 107690, 121000, 122375, 172304, 178000, 195800, 215380, 242000, 244750, 269225, 391600, 430760, 489500, 538450, 861520, 979000, 1076900, 1346125, 1958000, 2153800, 2692250, 4307600, 5384500, 10769000, 21538000]

約数ペア:

[(1, 21538000), (2, 10769000), (4, 5384500), (5, 4307600), (8, 2692250), (10, 2153800), (11, 1958000), (16, 1346125), (20, 1076900), (22, 979000), (25, 861520), (40, 538450), (44, 489500), (50, 430760), (55, 391600), (80, 269225), (88, 244750), (89, 242000), (100, 215380), (110, 195800), (121, 178000), (125, 172304), (176, 122375), (178, 121000), (200, 107690), (220, 97900), (242, 89000), (250, 86152), (275, 78320), (356, 60500), (400, 53845), (440, 48950), (445, 48400), (484, 44500), (500, 43076), (550, 39160), (605, 35600), (712, 30250), (880, 24475), (890, 24200), (968, 22250), (979, 22000), (1000, 21538), (1100, 19580), (1210, 17800), (1375, 15664), (1424, 15125), (1780, 12100), (1936, 11125), (1958, 11000), (2000, 10769), (2200, 9790), (2225, 9680), (2420, 8900), (2750, 7832), (3025, 7120), (3560, 6050), (3916, 5500), (4400, 4895), (4450, 4840)]