421559960

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{1789}}^1$

素因数の和:1980

約数の個数: 64

約数和(自身を含む): 978199200

約数和(自身を除く): 556639240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 137, 172, 215, 274, 344, 430, 548, 685, 860, 1096, 1370, 1720, 1789, 2740, 3578, 5480, 5891, 7156, 8945, 11782, 14312, 17890, 23564, 29455, 35780, 47128, 58910, 71560, 76927, 117820, 153854, 235640, 245093, 307708, 384635, 490186, 615416, 769270, 980372, 1225465, 1538540, 1960744, 2450930, 3077080, 4901860, 9803720, 10538999, 21077998, 42155996, 52694995, 84311992, 105389990, 210779980, 421559960]

約数ペア:

[(1, 421559960), (2, 210779980), (4, 105389990), (5, 84311992), (8, 52694995), (10, 42155996), (20, 21077998), (40, 10538999), (43, 9803720), (86, 4901860), (137, 3077080), (172, 2450930), (215, 1960744), (274, 1538540), (344, 1225465), (430, 980372), (548, 769270), (685, 615416), (860, 490186), (1096, 384635), (1370, 307708), (1720, 245093), (1789, 235640), (2740, 153854), (3578, 117820), (5480, 76927), (5891, 71560), (7156, 58910), (8945, 47128), (11782, 35780), (14312, 29455), (17890, 23564)]