20597640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{113}}^1$

素因数の和:172

約数の個数: 192

約数和(自身を含む): 74856960

約数和(自身を除く): 54259320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 31, 35, 40, 42, 49, 56, 60, 62, 70, 84, 93, 98, 105, 113, 120, 124, 140, 147, 155, 168, 186, 196, 210, 217, 226, 245, 248, 280, 294, 310, 339, 372, 392, 420, 434, 452, 465, 490, 565, 588, 620, 651, 678, 735, 744, 791, 840, 868, 904, 930, 980, 1085, 1130, 1176, 1240, 1302, 1356, 1470, 1519, 1582, 1695, 1736, 1860, 1960, 2170, 2260, 2373, 2604, 2712, 2940, 3038, 3164, 3255, 3390, 3503, 3720, 3955, 4340, 4520, 4557, 4746, 5208, 5537, 5880, 6076, 6328, 6510, 6780, 7006, 7595, 7910, 8680, 9114, 9492, 10509, 11074, 11865, 12152, 13020, 13560, 14012, 15190, 15820, 16611, 17515, 18228, 18984, 21018, 22148, 22785, 23730, 24521, 26040, 27685, 28024, 30380, 31640, 33222, 35030, 36456, 42036, 44296, 45570, 47460, 49042, 52545, 55370, 60760, 66444, 70060, 73563, 83055, 84072, 91140, 94920, 98084, 105090, 110740, 122605, 132888, 140120, 147126, 166110, 171647, 182280, 196168, 210180, 221480, 245210, 294252, 332220, 343294, 367815, 420360, 490420, 514941, 588504, 664440, 686588, 735630, 858235, 980840, 1029882, 1373176, 1471260, 1716470, 2059764, 2574705, 2942520, 3432940, 4119528, 5149410, 6865880, 10298820, 20597640]

約数ペア:

[(1, 20597640), (2, 10298820), (3, 6865880), (4, 5149410), (5, 4119528), (6, 3432940), (7, 2942520), (8, 2574705), (10, 2059764), (12, 1716470), (14, 1471260), (15, 1373176), (20, 1029882), (21, 980840), (24, 858235), (28, 735630), (30, 686588), (31, 664440), (35, 588504), (40, 514941), (42, 490420), (49, 420360), (56, 367815), (60, 343294), (62, 332220), (70, 294252), (84, 245210), (93, 221480), (98, 210180), (105, 196168), (113, 182280), (120, 171647), (124, 166110), (140, 147126), (147, 140120), (155, 132888), (168, 122605), (186, 110740), (196, 105090), (210, 98084), (217, 94920), (226, 91140), (245, 84072), (248, 83055), (280, 73563), (294, 70060), (310, 66444), (339, 60760), (372, 55370), (392, 52545), (420, 49042), (434, 47460), (452, 45570), (465, 44296), (490, 42036), (565, 36456), (588, 35030), (620, 33222), (651, 31640), (678, 30380), (735, 28024), (744, 27685), (791, 26040), (840, 24521), (868, 23730), (904, 22785), (930, 22148), (980, 21018), (1085, 18984), (1130, 18228), (1176, 17515), (1240, 16611), (1302, 15820), (1356, 15190), (1470, 14012), (1519, 13560), (1582, 13020), (1695, 12152), (1736, 11865), (1860, 11074), (1960, 10509), (2170, 9492), (2260, 9114), (2373, 8680), (2604, 7910), (2712, 7595), (2940, 7006), (3038, 6780), (3164, 6510), (3255, 6328), (3390, 6076), (3503, 5880), (3720, 5537), (3955, 5208), (4340, 4746), (4520, 4557)]