About the Number

131279820

131279819 ← → 131279821

2進数表記:111110100110010101111001100

漢数字表記:一億三千百二十七万九千八百二十

素因数分解:

2 2 × 3 1 × 5 1 × 7 3 × 6379 1

素因数の和:6412
約数の個数: 96
約数和(自身を含む): 428736000
約数和(自身を除く): 297456180

約数列:
[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 343, 420, 490, 588, 686, 735, 980, 1029, 1372, 1470, 1715, 2058, 2940, 3430, 4116, 5145, 6379, 6860, 10290, 12758, 19137, 20580, 25516, 31895, 38274, 44653, 63790, 76548, 89306, 95685, 127580, 133959, 178612, 191370, 223265, 267918, 312571, 382740, 446530, 535836, 625142, 669795, 893060, 937713, 1250284, 1339590, 1562855, 1875426, 2187997, 2679180, 3125710, 3750852, 4375994, 4688565, 6251420, 6563991, 8751988, 9377130, 10939985, 13127982, 18754260, 21879970, 26255964, 32819955, 43759940, 65639910, 131279820]

約数ペア:
[(1, 131279820), (2, 65639910), (3, 43759940), (4, 32819955), (5, 26255964), (6, 21879970), (7, 18754260), (10, 13127982), (12, 10939985), (14, 9377130), (15, 8751988), (20, 6563991), (21, 6251420), (28, 4688565), (30, 4375994), (35, 3750852), (42, 3125710), (49, 2679180), (60, 2187997), (70, 1875426), (84, 1562855), (98, 1339590), (105, 1250284), (140, 937713), (147, 893060), (196, 669795), (210, 625142), (245, 535836), (294, 446530), (343, 382740), (420, 312571), (490, 267918), (588, 223265), (686, 191370), (735, 178612), (980, 133959), (1029, 127580), (1372, 95685), (1470, 89306), (1715, 76548), (2058, 63790), (2940, 44653), (3430, 38274), (4116, 31895), (5145, 25516), (6379, 20580), (6860, 19137), (10290, 12758)]

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