About the Number

391489920

391489919 ← → 391489921

2進数表記:10111010101011010100110000000

漢数字表記:三億九千百四十八万九千九百二十

素因数分解:

2 7 × 3 2 × 5 1 × 67967 1

素因数の和:67992
約数の個数: 96
約数和(自身を含む): 1351883520
約数和(自身を除く): 960393600

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 64, 72, 80, 90, 96, 120, 128, 144, 160, 180, 192, 240, 288, 320, 360, 384, 480, 576, 640, 720, 960, 1152, 1440, 1920, 2880, 5760, 67967, 135934, 203901, 271868, 339835, 407802, 543736, 611703, 679670, 815604, 1019505, 1087472, 1223406, 1359340, 1631208, 2039010, 2174944, 2446812, 2718680, 3058515, 3262416, 4078020, 4349888, 4893624, 5437360, 6117030, 6524832, 8156040, 8699776, 9787248, 10874720, 12234060, 13049664, 16312080, 19574496, 21749440, 24468120, 26099328, 32624160, 39148992, 43498880, 48936240, 65248320, 78297984, 97872480, 130496640, 195744960, 391489920]

約数ペア:
[(1, 391489920), (2, 195744960), (3, 130496640), (4, 97872480), (5, 78297984), (6, 65248320), (8, 48936240), (9, 43498880), (10, 39148992), (12, 32624160), (15, 26099328), (16, 24468120), (18, 21749440), (20, 19574496), (24, 16312080), (30, 13049664), (32, 12234060), (36, 10874720), (40, 9787248), (45, 8699776), (48, 8156040), (60, 6524832), (64, 6117030), (72, 5437360), (80, 4893624), (90, 4349888), (96, 4078020), (120, 3262416), (128, 3058515), (144, 2718680), (160, 2446812), (180, 2174944), (192, 2039010), (240, 1631208), (288, 1359340), (320, 1223406), (360, 1087472), (384, 1019505), (480, 815604), (576, 679670), (640, 611703), (720, 543736), (960, 407802), (1152, 339835), (1440, 271868), (1920, 203901), (2880, 135934), (5760, 67967)]

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