20354600

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{67}}^1$

素因数の和:128

約数の個数: 144

約数和(自身を含む): 57674880

約数和(自身を除く): 37320280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 31, 35, 40, 49, 50, 56, 62, 67, 70, 98, 100, 124, 134, 140, 155, 175, 196, 200, 217, 245, 248, 268, 280, 310, 335, 350, 392, 434, 469, 490, 536, 620, 670, 700, 775, 868, 938, 980, 1085, 1225, 1240, 1340, 1400, 1519, 1550, 1675, 1736, 1876, 1960, 2077, 2170, 2345, 2450, 2680, 3038, 3100, 3283, 3350, 3752, 4154, 4340, 4690, 4900, 5425, 6076, 6200, 6566, 6700, 7595, 8308, 8680, 9380, 9800, 10385, 10850, 11725, 12152, 13132, 13400, 14539, 15190, 16415, 16616, 18760, 20770, 21700, 23450, 26264, 29078, 30380, 32830, 37975, 41540, 43400, 46900, 51925, 58156, 60760, 65660, 72695, 75950, 82075, 83080, 93800, 101773, 103850, 116312, 131320, 145390, 151900, 164150, 203546, 207700, 290780, 303800, 328300, 363475, 407092, 415400, 508865, 581560, 656600, 726950, 814184, 1017730, 1453900, 2035460, 2544325, 2907800, 4070920, 5088650, 10177300, 20354600]

約数ペア:

[(1, 20354600), (2, 10177300), (4, 5088650), (5, 4070920), (7, 2907800), (8, 2544325), (10, 2035460), (14, 1453900), (20, 1017730), (25, 814184), (28, 726950), (31, 656600), (35, 581560), (40, 508865), (49, 415400), (50, 407092), (56, 363475), (62, 328300), (67, 303800), (70, 290780), (98, 207700), (100, 203546), (124, 164150), (134, 151900), (140, 145390), (155, 131320), (175, 116312), (196, 103850), (200, 101773), (217, 93800), (245, 83080), (248, 82075), (268, 75950), (280, 72695), (310, 65660), (335, 60760), (350, 58156), (392, 51925), (434, 46900), (469, 43400), (490, 41540), (536, 37975), (620, 32830), (670, 30380), (700, 29078), (775, 26264), (868, 23450), (938, 21700), (980, 20770), (1085, 18760), (1225, 16616), (1240, 16415), (1340, 15190), (1400, 14539), (1519, 13400), (1550, 13132), (1675, 12152), (1736, 11725), (1876, 10850), (1960, 10385), (2077, 9800), (2170, 9380), (2345, 8680), (2450, 8308), (2680, 7595), (3038, 6700), (3100, 6566), (3283, 6200), (3350, 6076), (3752, 5425), (4154, 4900), (4340, 4690)]