About the Number

21309040

21309039 ← → 21309041

2進数表記:1010001010010011001110000

漢数字表記:二千百三十万九千四十

素因数分解:

2 4 × 5 1 × 23 1 × 37 1 × 313 1

素因数の和:386
約数の個数: 80
約数和(自身を含む): 53264448
約数和(自身を除く): 31955408

約数列:
[1, 2, 4, 5, 8, 10, 16, 20, 23, 37, 40, 46, 74, 80, 92, 115, 148, 184, 185, 230, 296, 313, 368, 370, 460, 592, 626, 740, 851, 920, 1252, 1480, 1565, 1702, 1840, 2504, 2960, 3130, 3404, 4255, 5008, 6260, 6808, 7199, 8510, 11581, 12520, 13616, 14398, 17020, 23162, 25040, 28796, 34040, 35995, 46324, 57592, 57905, 68080, 71990, 92648, 115184, 115810, 143980, 185296, 231620, 266363, 287960, 463240, 532726, 575920, 926480, 1065452, 1331815, 2130904, 2663630, 4261808, 5327260, 10654520, 21309040]

約数ペア:
[(1, 21309040), (2, 10654520), (4, 5327260), (5, 4261808), (8, 2663630), (10, 2130904), (16, 1331815), (20, 1065452), (23, 926480), (37, 575920), (40, 532726), (46, 463240), (74, 287960), (80, 266363), (92, 231620), (115, 185296), (148, 143980), (184, 115810), (185, 115184), (230, 92648), (296, 71990), (313, 68080), (368, 57905), (370, 57592), (460, 46324), (592, 35995), (626, 34040), (740, 28796), (851, 25040), (920, 23162), (1252, 17020), (1480, 14398), (1565, 13616), (1702, 12520), (1840, 11581), (2504, 8510), (2960, 7199), (3130, 6808), (3404, 6260), (4255, 5008)]

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