About the Number

21005838

21005837 ← → 21005839

2進数表記:1010000001000011000001110

漢数字表記:二千百万五千八百三十八

素因数分解:

2 1 × 3 3 × 7 1 × 61 1 × 911 1

素因数の和:990
約数の個数: 64
約数和(自身を含む): 54282240
約数和(自身を除く): 33276402

約数列:
[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 61, 63, 122, 126, 183, 189, 366, 378, 427, 549, 854, 911, 1098, 1281, 1647, 1822, 2562, 2733, 3294, 3843, 5466, 6377, 7686, 8199, 11529, 12754, 16398, 19131, 23058, 24597, 38262, 49194, 55571, 57393, 111142, 114786, 166713, 172179, 333426, 344358, 388997, 500139, 777994, 1000278, 1166991, 1500417, 2333982, 3000834, 3500973, 7001946, 10502919, 21005838]

約数ペア:
[(1, 21005838), (2, 10502919), (3, 7001946), (6, 3500973), (7, 3000834), (9, 2333982), (14, 1500417), (18, 1166991), (21, 1000278), (27, 777994), (42, 500139), (54, 388997), (61, 344358), (63, 333426), (122, 172179), (126, 166713), (183, 114786), (189, 111142), (366, 57393), (378, 55571), (427, 49194), (549, 38262), (854, 24597), (911, 23058), (1098, 19131), (1281, 16398), (1647, 12754), (1822, 11529), (2562, 8199), (2733, 7686), (3294, 6377), (3843, 5466)]

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