254487680

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{127}}^1$

素因数の和:278

約数の個数: 128

約数和(自身を含む): 639221760

約数和(自身を除く): 384734080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 101, 124, 127, 128, 155, 160, 202, 248, 254, 310, 320, 404, 496, 505, 508, 620, 635, 640, 808, 992, 1010, 1016, 1240, 1270, 1616, 1984, 2020, 2032, 2480, 2540, 3131, 3232, 3937, 3968, 4040, 4064, 4960, 5080, 6262, 6464, 7874, 8080, 8128, 9920, 10160, 12524, 12827, 12928, 15655, 15748, 16160, 16256, 19685, 19840, 20320, 25048, 25654, 31310, 31496, 32320, 39370, 40640, 50096, 51308, 62620, 62992, 64135, 64640, 78740, 81280, 100192, 102616, 125240, 125984, 128270, 157480, 200384, 205232, 250480, 251968, 256540, 314960, 397637, 400768, 410464, 500960, 503936, 513080, 629920, 795274, 820928, 1001920, 1026160, 1259840, 1590548, 1641856, 1988185, 2003840, 2052320, 2519680, 3181096, 3976370, 4104640, 6362192, 7952740, 8209280, 12724384, 15905480, 25448768, 31810960, 50897536, 63621920, 127243840, 254487680]

約数ペア:

[(1, 254487680), (2, 127243840), (4, 63621920), (5, 50897536), (8, 31810960), (10, 25448768), (16, 15905480), (20, 12724384), (31, 8209280), (32, 7952740), (40, 6362192), (62, 4104640), (64, 3976370), (80, 3181096), (101, 2519680), (124, 2052320), (127, 2003840), (128, 1988185), (155, 1641856), (160, 1590548), (202, 1259840), (248, 1026160), (254, 1001920), (310, 820928), (320, 795274), (404, 629920), (496, 513080), (505, 503936), (508, 500960), (620, 410464), (635, 400768), (640, 397637), (808, 314960), (992, 256540), (1010, 251968), (1016, 250480), (1240, 205232), (1270, 200384), (1616, 157480), (1984, 128270), (2020, 125984), (2032, 125240), (2480, 102616), (2540, 100192), (3131, 81280), (3232, 78740), (3937, 64640), (3968, 64135), (4040, 62992), (4064, 62620), (4960, 51308), (5080, 50096), (6262, 40640), (6464, 39370), (7874, 32320), (8080, 31496), (8128, 31310), (9920, 25654), (10160, 25048), (12524, 20320), (12827, 19840), (12928, 19685), (15655, 16256), (15748, 16160)]