About the Number

1205280

1205279 ← → 1205281

2進数表記:100100110010000100000

漢数字表記:百二十万五千二百八十

素因数分解:

2 5 × 3 5 × 5 1 × 31 1

素因数の和:61
約数の個数: 144
約数和(自身を含む): 4402944
約数和(自身を除く): 3197664

約数列:
[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 31, 32, 36, 40, 45, 48, 54, 60, 62, 72, 80, 81, 90, 93, 96, 108, 120, 124, 135, 144, 155, 160, 162, 180, 186, 216, 240, 243, 248, 270, 279, 288, 310, 324, 360, 372, 405, 432, 465, 480, 486, 496, 540, 558, 620, 648, 720, 744, 810, 837, 864, 930, 972, 992, 1080, 1116, 1215, 1240, 1296, 1395, 1440, 1488, 1620, 1674, 1860, 1944, 2160, 2232, 2430, 2480, 2511, 2592, 2790, 2976, 3240, 3348, 3720, 3888, 4185, 4320, 4464, 4860, 4960, 5022, 5580, 6480, 6696, 7440, 7533, 7776, 8370, 8928, 9720, 10044, 11160, 12555, 12960, 13392, 14880, 15066, 16740, 19440, 20088, 22320, 25110, 26784, 30132, 33480, 37665, 38880, 40176, 44640, 50220, 60264, 66960, 75330, 80352, 100440, 120528, 133920, 150660, 200880, 241056, 301320, 401760, 602640, 1205280]

約数ペア:
[(1, 1205280), (2, 602640), (3, 401760), (4, 301320), (5, 241056), (6, 200880), (8, 150660), (9, 133920), (10, 120528), (12, 100440), (15, 80352), (16, 75330), (18, 66960), (20, 60264), (24, 50220), (27, 44640), (30, 40176), (31, 38880), (32, 37665), (36, 33480), (40, 30132), (45, 26784), (48, 25110), (54, 22320), (60, 20088), (62, 19440), (72, 16740), (80, 15066), (81, 14880), (90, 13392), (93, 12960), (96, 12555), (108, 11160), (120, 10044), (124, 9720), (135, 8928), (144, 8370), (155, 7776), (160, 7533), (162, 7440), (180, 6696), (186, 6480), (216, 5580), (240, 5022), (243, 4960), (248, 4860), (270, 4464), (279, 4320), (288, 4185), (310, 3888), (324, 3720), (360, 3348), (372, 3240), (405, 2976), (432, 2790), (465, 2592), (480, 2511), (486, 2480), (496, 2430), (540, 2232), (558, 2160), (620, 1944), (648, 1860), (720, 1674), (744, 1620), (810, 1488), (837, 1440), (864, 1395), (930, 1296), (972, 1240), (992, 1215), (1080, 1116)]

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