About the Number

2131808

2131807 ← → 2131809

2進数表記:1000001000011101100000

漢数字表記:二百十三万千八百八

素因数分解:

2 5 × 7 1 × 31 1 × 307 1

素因数の和:355
約数の個数: 48
約数和(自身を含む): 4967424
約数和(自身を除く): 2835616

約数列:
[1, 2, 4, 7, 8, 14, 16, 28, 31, 32, 56, 62, 112, 124, 217, 224, 248, 307, 434, 496, 614, 868, 992, 1228, 1736, 2149, 2456, 3472, 4298, 4912, 6944, 8596, 9517, 9824, 17192, 19034, 34384, 38068, 66619, 68768, 76136, 133238, 152272, 266476, 304544, 532952, 1065904, 2131808]

約数ペア:
[(1, 2131808), (2, 1065904), (4, 532952), (7, 304544), (8, 266476), (14, 152272), (16, 133238), (28, 76136), (31, 68768), (32, 66619), (56, 38068), (62, 34384), (112, 19034), (124, 17192), (217, 9824), (224, 9517), (248, 8596), (307, 6944), (434, 4912), (496, 4298), (614, 3472), (868, 2456), (992, 2149), (1228, 1736)]

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