About the Number

231806640

231806639 ← → 231806641

2進数表記:1101110100010001011010110000

漢数字表記:二億三千百八十万六千六百四十

素因数分解:

2 4 × 3 1 × 5 1 × 13 1 × 74297 1

素因数の和:74326
約数の個数: 80
約数和(自身を含む): 773887968
約数和(自身を除く): 542081328

約数列:
[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 74297, 148594, 222891, 297188, 371485, 445782, 594376, 742970, 891564, 965861, 1114455, 1188752, 1485940, 1783128, 1931722, 2228910, 2897583, 2971880, 3566256, 3863444, 4457820, 4829305, 5795166, 5943760, 7726888, 8915640, 9658610, 11590332, 14487915, 15453776, 17831280, 19317220, 23180664, 28975830, 38634440, 46361328, 57951660, 77268880, 115903320, 231806640]

約数ペア:
[(1, 231806640), (2, 115903320), (3, 77268880), (4, 57951660), (5, 46361328), (6, 38634440), (8, 28975830), (10, 23180664), (12, 19317220), (13, 17831280), (15, 15453776), (16, 14487915), (20, 11590332), (24, 9658610), (26, 8915640), (30, 7726888), (39, 5943760), (40, 5795166), (48, 4829305), (52, 4457820), (60, 3863444), (65, 3566256), (78, 2971880), (80, 2897583), (104, 2228910), (120, 1931722), (130, 1783128), (156, 1485940), (195, 1188752), (208, 1114455), (240, 965861), (260, 891564), (312, 742970), (390, 594376), (520, 445782), (624, 371485), (780, 297188), (1040, 222891), (1560, 148594), (3120, 74297)]

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