About the Number

21020238729

21020238728 ← → 21020238730

2進数表記:10011100100111001110110001110001001

漢数字表記:二百十億二千二十三万八千七百二十九

素因数分解:

3 2 × 7 1 × 23 2 × 151 1 × 4177 1

素因数の和:4387
約数の個数: 72
約数和(自身を含む): 36523340672
約数和(自身を除く): 15503101943

約数列:
[1, 3, 7, 9, 21, 23, 63, 69, 151, 161, 207, 453, 483, 529, 1057, 1359, 1449, 1587, 3171, 3473, 3703, 4177, 4761, 9513, 10419, 11109, 12531, 24311, 29239, 31257, 33327, 37593, 72933, 79879, 87717, 96071, 218799, 239637, 263151, 288213, 559153, 630727, 672497, 718911, 864639, 1677459, 1892181, 2017491, 2209633, 4415089, 5032377, 5676543, 6052473, 6628899, 13245267, 14506721, 15467431, 19886697, 39735801, 43520163, 46402293, 101547047, 130560489, 139206879, 304641141, 333654583, 913923423, 1000963749, 2335582081, 3002891247, 7006746243, 21020238729]

約数ペア:
[(1, 21020238729), (3, 7006746243), (7, 3002891247), (9, 2335582081), (21, 1000963749), (23, 913923423), (63, 333654583), (69, 304641141), (151, 139206879), (161, 130560489), (207, 101547047), (453, 46402293), (483, 43520163), (529, 39735801), (1057, 19886697), (1359, 15467431), (1449, 14506721), (1587, 13245267), (3171, 6628899), (3473, 6052473), (3703, 5676543), (4177, 5032377), (4761, 4415089), (9513, 2209633), (10419, 2017491), (11109, 1892181), (12531, 1677459), (24311, 864639), (29239, 718911), (31257, 672497), (33327, 630727), (37593, 559153), (72933, 288213), (79879, 263151), (87717, 239637), (96071, 218799)]

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