About the Number

201230020

201230019 ← → 201230021

2進数表記:1011111111101000011011000100

漢数字表記:二億百二十三万二十

素因数分解:

2 2 × 5 1 × 17 1 × 163 1 × 3631 1

素因数の和:3820
約数の個数: 48
約数和(自身を含む): 450309888
約数和(自身を除く): 249079868

約数列:
[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 163, 170, 326, 340, 652, 815, 1630, 2771, 3260, 3631, 5542, 7262, 11084, 13855, 14524, 18155, 27710, 36310, 55420, 61727, 72620, 123454, 246908, 308635, 591853, 617270, 1183706, 1234540, 2367412, 2959265, 5918530, 10061501, 11837060, 20123002, 40246004, 50307505, 100615010, 201230020]

約数ペア:
[(1, 201230020), (2, 100615010), (4, 50307505), (5, 40246004), (10, 20123002), (17, 11837060), (20, 10061501), (34, 5918530), (68, 2959265), (85, 2367412), (163, 1234540), (170, 1183706), (326, 617270), (340, 591853), (652, 308635), (815, 246908), (1630, 123454), (2771, 72620), (3260, 61727), (3631, 55420), (5542, 36310), (7262, 27710), (11084, 18155), (13855, 14524)]

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