About the Number

20151240

20151239 ← → 20151241

2進数表記:1001100110111101111001000

漢数字表記:二千十五万千二百四十

素因数分解:

2 3 × 3 1 × 5 1 × 31 1 × 5417 1

素因数の和:5462
約数の個数: 64
約数和(自身を含む): 62415360
約数和(自身を除く): 42264120

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 5417, 10834, 16251, 21668, 27085, 32502, 43336, 54170, 65004, 81255, 108340, 130008, 162510, 167927, 216680, 325020, 335854, 503781, 650040, 671708, 839635, 1007562, 1343416, 1679270, 2015124, 2518905, 3358540, 4030248, 5037810, 6717080, 10075620, 20151240]

約数ペア:
[(1, 20151240), (2, 10075620), (3, 6717080), (4, 5037810), (5, 4030248), (6, 3358540), (8, 2518905), (10, 2015124), (12, 1679270), (15, 1343416), (20, 1007562), (24, 839635), (30, 671708), (31, 650040), (40, 503781), (60, 335854), (62, 325020), (93, 216680), (120, 167927), (124, 162510), (155, 130008), (186, 108340), (248, 81255), (310, 65004), (372, 54170), (465, 43336), (620, 32502), (744, 27085), (930, 21668), (1240, 16251), (1860, 10834), (3720, 5417)]

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