About the Number

123942780

123942779 ← → 123942781

2進数表記:111011000110011011101111100

漢数字表記:一億二千三百九十四万二千七百八十

素因数分解:

2 2 × 3 2 × 5 1 × 13 1 × 52967 1

素因数の和:52995
約数の個数: 72
約数和(自身を含む): 404887392
約数和(自身を除く): 280944612

約数列:
[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 52967, 105934, 158901, 211868, 264835, 317802, 476703, 529670, 635604, 688571, 794505, 953406, 1059340, 1377142, 1589010, 1906812, 2065713, 2383515, 2754284, 3178020, 3442855, 4131426, 4767030, 6197139, 6885710, 8262852, 9534060, 10328565, 12394278, 13771420, 20657130, 24788556, 30985695, 41314260, 61971390, 123942780]

約数ペア:
[(1, 123942780), (2, 61971390), (3, 41314260), (4, 30985695), (5, 24788556), (6, 20657130), (9, 13771420), (10, 12394278), (12, 10328565), (13, 9534060), (15, 8262852), (18, 6885710), (20, 6197139), (26, 4767030), (30, 4131426), (36, 3442855), (39, 3178020), (45, 2754284), (52, 2383515), (60, 2065713), (65, 1906812), (78, 1589010), (90, 1377142), (117, 1059340), (130, 953406), (156, 794505), (180, 688571), (195, 635604), (234, 529670), (260, 476703), (390, 317802), (468, 264835), (585, 211868), (780, 158901), (1170, 105934), (2340, 52967)]

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