About the Number

87217380

87217379 ← → 87217381

2進数表記:101001100101101010011100100

漢数字表記:八千七百二十一万七千三百八十

素因数分解:

2 2 × 3 2 × 5 1 × 23 1 × 21067 1

素因数の和:21105
約数の個数: 72
約数和(自身を含む): 276075072
約数和(自身を除く): 188857692

約数列:
[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 21067, 42134, 63201, 84268, 105335, 126402, 189603, 210670, 252804, 316005, 379206, 421340, 484541, 632010, 758412, 948015, 969082, 1264020, 1453623, 1896030, 1938164, 2422705, 2907246, 3792060, 4360869, 4845410, 5814492, 7268115, 8721738, 9690820, 14536230, 17443476, 21804345, 29072460, 43608690, 87217380]

約数ペア:
[(1, 87217380), (2, 43608690), (3, 29072460), (4, 21804345), (5, 17443476), (6, 14536230), (9, 9690820), (10, 8721738), (12, 7268115), (15, 5814492), (18, 4845410), (20, 4360869), (23, 3792060), (30, 2907246), (36, 2422705), (45, 1938164), (46, 1896030), (60, 1453623), (69, 1264020), (90, 969082), (92, 948015), (115, 758412), (138, 632010), (180, 484541), (207, 421340), (230, 379206), (276, 316005), (345, 252804), (414, 210670), (460, 189603), (690, 126402), (828, 105335), (1035, 84268), (1380, 63201), (2070, 42134), (4140, 21067)]

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