About the Number

388804080

388804079 ← → 388804081

2進数表記:10111001011001010110111110000

漢数字表記:三億八千八百八十万四千八十

素因数分解:

2 4 × 3 1 × 5 1 × 7 1 × 231431 1

素因数の和:231454
約数の個数: 80
約数和(自身を含む): 1377483264
約数和(自身を除く): 988679184

約数列:
[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 231431, 462862, 694293, 925724, 1157155, 1388586, 1620017, 1851448, 2314310, 2777172, 3240034, 3471465, 3702896, 4628620, 4860051, 5554344, 6480068, 6942930, 8100085, 9257240, 9720102, 11108688, 12960136, 13885860, 16200170, 18514480, 19440204, 24300255, 25920272, 27771720, 32400340, 38880408, 48600510, 55543440, 64800680, 77760816, 97201020, 129601360, 194402040, 388804080]

約数ペア:
[(1, 388804080), (2, 194402040), (3, 129601360), (4, 97201020), (5, 77760816), (6, 64800680), (7, 55543440), (8, 48600510), (10, 38880408), (12, 32400340), (14, 27771720), (15, 25920272), (16, 24300255), (20, 19440204), (21, 18514480), (24, 16200170), (28, 13885860), (30, 12960136), (35, 11108688), (40, 9720102), (42, 9257240), (48, 8100085), (56, 6942930), (60, 6480068), (70, 5554344), (80, 4860051), (84, 4628620), (105, 3702896), (112, 3471465), (120, 3240034), (140, 2777172), (168, 2314310), (210, 1851448), (240, 1620017), (280, 1388586), (336, 1157155), (420, 925724), (560, 694293), (840, 462862), (1680, 231431)]

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