209743520

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{863}}^1$

素因数の和:923

約数の個数: 144

約数和(自身を含む): 595703808

約数和(自身を除く): 385960288

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 49, 56, 62, 70, 80, 98, 112, 124, 140, 155, 160, 196, 217, 224, 245, 248, 280, 310, 392, 434, 490, 496, 560, 620, 784, 863, 868, 980, 992, 1085, 1120, 1240, 1519, 1568, 1726, 1736, 1960, 2170, 2480, 3038, 3452, 3472, 3920, 4315, 4340, 4960, 6041, 6076, 6904, 6944, 7595, 7840, 8630, 8680, 12082, 12152, 13808, 15190, 17260, 17360, 24164, 24304, 26753, 27616, 30205, 30380, 34520, 34720, 42287, 48328, 48608, 53506, 60410, 60760, 69040, 84574, 96656, 107012, 120820, 121520, 133765, 138080, 169148, 187271, 193312, 211435, 214024, 241640, 243040, 267530, 338296, 374542, 422870, 428048, 483280, 535060, 676592, 749084, 845740, 856096, 936355, 966560, 1070120, 1310897, 1353184, 1498168, 1691480, 1872710, 2140240, 2621794, 2996336, 3382960, 3745420, 4280480, 5243588, 5992672, 6554485, 6765920, 7490840, 10487176, 13108970, 14981680, 20974352, 26217940, 29963360, 41948704, 52435880, 104871760, 209743520]

約数ペア:

[(1, 209743520), (2, 104871760), (4, 52435880), (5, 41948704), (7, 29963360), (8, 26217940), (10, 20974352), (14, 14981680), (16, 13108970), (20, 10487176), (28, 7490840), (31, 6765920), (32, 6554485), (35, 5992672), (40, 5243588), (49, 4280480), (56, 3745420), (62, 3382960), (70, 2996336), (80, 2621794), (98, 2140240), (112, 1872710), (124, 1691480), (140, 1498168), (155, 1353184), (160, 1310897), (196, 1070120), (217, 966560), (224, 936355), (245, 856096), (248, 845740), (280, 749084), (310, 676592), (392, 535060), (434, 483280), (490, 428048), (496, 422870), (560, 374542), (620, 338296), (784, 267530), (863, 243040), (868, 241640), (980, 214024), (992, 211435), (1085, 193312), (1120, 187271), (1240, 169148), (1519, 138080), (1568, 133765), (1726, 121520), (1736, 120820), (1960, 107012), (2170, 96656), (2480, 84574), (3038, 69040), (3452, 60760), (3472, 60410), (3920, 53506), (4315, 48608), (4340, 48328), (4960, 42287), (6041, 34720), (6076, 34520), (6904, 30380), (6944, 30205), (7595, 27616), (7840, 26753), (8630, 24304), (8680, 24164), (12082, 17360), (12152, 17260), (13808, 15190)]