About the Number

2131640

2131639 ← → 2131641

2進数表記:1000001000011010111000

漢数字表記:二百十三万千六百四十

素因数分解:

2 3 × 5 1 × 7 1 × 23 1 × 331 1

素因数の和:372
約数の個数: 64
約数和(自身を含む): 5736960
約数和(自身を除く): 3605320

約数列:
[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 331, 460, 644, 662, 805, 920, 1288, 1324, 1610, 1655, 2317, 2648, 3220, 3310, 4634, 6440, 6620, 7613, 9268, 11585, 13240, 15226, 18536, 23170, 30452, 38065, 46340, 53291, 60904, 76130, 92680, 106582, 152260, 213164, 266455, 304520, 426328, 532910, 1065820, 2131640]

約数ペア:
[(1, 2131640), (2, 1065820), (4, 532910), (5, 426328), (7, 304520), (8, 266455), (10, 213164), (14, 152260), (20, 106582), (23, 92680), (28, 76130), (35, 60904), (40, 53291), (46, 46340), (56, 38065), (70, 30452), (92, 23170), (115, 18536), (140, 15226), (161, 13240), (184, 11585), (230, 9268), (280, 7613), (322, 6620), (331, 6440), (460, 4634), (644, 3310), (662, 3220), (805, 2648), (920, 2317), (1288, 1655), (1324, 1610)]

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