About the Number

221420008

221420007 ← → 221420009

2進数表記:1101001100101001100111101000

漢数字表記:二億二千百四十二万八

素因数分解:

2 3 × 41 1 × 47 1 × 53 1 × 271 1

素因数の和:418
約数の個数: 64
約数和(自身を含む): 444165120
約数和(自身を除く): 222745112

約数列:
[1, 2, 4, 8, 41, 47, 53, 82, 94, 106, 164, 188, 212, 271, 328, 376, 424, 542, 1084, 1927, 2168, 2173, 2491, 3854, 4346, 4982, 7708, 8692, 9964, 11111, 12737, 14363, 15416, 17384, 19928, 22222, 25474, 28726, 44444, 50948, 57452, 88888, 101896, 102131, 114904, 204262, 408524, 522217, 588883, 675061, 817048, 1044434, 1177766, 1350122, 2088868, 2355532, 2700244, 4177736, 4711064, 5400488, 27677501, 55355002, 110710004, 221420008]

約数ペア:
[(1, 221420008), (2, 110710004), (4, 55355002), (8, 27677501), (41, 5400488), (47, 4711064), (53, 4177736), (82, 2700244), (94, 2355532), (106, 2088868), (164, 1350122), (188, 1177766), (212, 1044434), (271, 817048), (328, 675061), (376, 588883), (424, 522217), (542, 408524), (1084, 204262), (1927, 114904), (2168, 102131), (2173, 101896), (2491, 88888), (3854, 57452), (4346, 50948), (4982, 44444), (7708, 28726), (8692, 25474), (9964, 22222), (11111, 19928), (12737, 17384), (14363, 15416)]

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