About the Number

131521920

131521919 ← → 131521921

2進数表記:111110101101101110110000000

漢数字表記:一億三千百五十二万千九百二十

素因数分解:

2 7 × 3 1 × 5 1 × 68501 1

素因数の和:68523
約数の個数: 64
約数和(自身を含む): 419232240
約数和(自身を除く): 287710320

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 320, 384, 480, 640, 960, 1920, 68501, 137002, 205503, 274004, 342505, 411006, 548008, 685010, 822012, 1027515, 1096016, 1370020, 1644024, 2055030, 2192032, 2740040, 3288048, 4110060, 4384064, 5480080, 6576096, 8220120, 8768128, 10960160, 13152192, 16440240, 21920320, 26304384, 32880480, 43840640, 65760960, 131521920]

約数ペア:
[(1, 131521920), (2, 65760960), (3, 43840640), (4, 32880480), (5, 26304384), (6, 21920320), (8, 16440240), (10, 13152192), (12, 10960160), (15, 8768128), (16, 8220120), (20, 6576096), (24, 5480080), (30, 4384064), (32, 4110060), (40, 3288048), (48, 2740040), (60, 2192032), (64, 2055030), (80, 1644024), (96, 1370020), (120, 1096016), (128, 1027515), (160, 822012), (192, 685010), (240, 548008), (320, 411006), (384, 342505), (480, 274004), (640, 205503), (960, 137002), (1920, 68501)]

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