About the Number

381780

381779 ← → 381781

2進数表記:1011101001101010100

漢数字表記:三十八万千七百八十

素因数分解:

2 2 × 3 3 × 5 1 × 7 1 × 101 1

素因数の和:126
約数の個数: 96
約数和(自身を含む): 1370880
約数和(自身を除く): 989100

約数列:
[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 101, 105, 108, 126, 135, 140, 180, 189, 202, 210, 252, 270, 303, 315, 378, 404, 420, 505, 540, 606, 630, 707, 756, 909, 945, 1010, 1212, 1260, 1414, 1515, 1818, 1890, 2020, 2121, 2727, 2828, 3030, 3535, 3636, 3780, 4242, 4545, 5454, 6060, 6363, 7070, 8484, 9090, 10605, 10908, 12726, 13635, 14140, 18180, 19089, 21210, 25452, 27270, 31815, 38178, 42420, 54540, 63630, 76356, 95445, 127260, 190890, 381780]

約数ペア:
[(1, 381780), (2, 190890), (3, 127260), (4, 95445), (5, 76356), (6, 63630), (7, 54540), (9, 42420), (10, 38178), (12, 31815), (14, 27270), (15, 25452), (18, 21210), (20, 19089), (21, 18180), (27, 14140), (28, 13635), (30, 12726), (35, 10908), (36, 10605), (42, 9090), (45, 8484), (54, 7070), (60, 6363), (63, 6060), (70, 5454), (84, 4545), (90, 4242), (101, 3780), (105, 3636), (108, 3535), (126, 3030), (135, 2828), (140, 2727), (180, 2121), (189, 2020), (202, 1890), (210, 1818), (252, 1515), (270, 1414), (303, 1260), (315, 1212), (378, 1010), (404, 945), (420, 909), (505, 756), (540, 707), (606, 630)]

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