About the Number

201521540

201521539 ← → 201521541

2進数表記:1100000000101111100110000100

漢数字表記:二億百五十二万千五百四十

素因数分解:

2 2 × 5 1 × 11 1 × 461 1 × 1987 1

素因数の和:2468
約数の個数: 48
約数和(自身を含む): 462901824
約数和(自身を除く): 261380284

約数列:
[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 461, 922, 1844, 1987, 2305, 3974, 4610, 5071, 7948, 9220, 9935, 10142, 19870, 20284, 21857, 25355, 39740, 43714, 50710, 87428, 101420, 109285, 218570, 437140, 916007, 1832014, 3664028, 4580035, 9160070, 10076077, 18320140, 20152154, 40304308, 50380385, 100760770, 201521540]

約数ペア:
[(1, 201521540), (2, 100760770), (4, 50380385), (5, 40304308), (10, 20152154), (11, 18320140), (20, 10076077), (22, 9160070), (44, 4580035), (55, 3664028), (110, 1832014), (220, 916007), (461, 437140), (922, 218570), (1844, 109285), (1987, 101420), (2305, 87428), (3974, 50710), (4610, 43714), (5071, 39740), (7948, 25355), (9220, 21857), (9935, 20284), (10142, 19870)]

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