About the Number

21000210

21000209 ← → 21000211

2進数表記:1010000000111000000010010

漢数字表記:二千百万二百十

素因数分解:

2 1 × 3 1 × 5 1 × 7 1 × 11 1 × 9091 1

素因数の和:9119
約数の個数: 64
約数和(自身を含む): 62843904
約数和(自身を除く): 41843694

約数列:
[1, 2, 3, 5, 6, 7, 10, 11, 14, 15, 21, 22, 30, 33, 35, 42, 55, 66, 70, 77, 105, 110, 154, 165, 210, 231, 330, 385, 462, 770, 1155, 2310, 9091, 18182, 27273, 45455, 54546, 63637, 90910, 100001, 127274, 136365, 190911, 200002, 272730, 300003, 318185, 381822, 500005, 600006, 636370, 700007, 954555, 1000010, 1400014, 1500015, 1909110, 2100021, 3000030, 3500035, 4200042, 7000070, 10500105, 21000210]

約数ペア:
[(1, 21000210), (2, 10500105), (3, 7000070), (5, 4200042), (6, 3500035), (7, 3000030), (10, 2100021), (11, 1909110), (14, 1500015), (15, 1400014), (21, 1000010), (22, 954555), (30, 700007), (33, 636370), (35, 600006), (42, 500005), (55, 381822), (66, 318185), (70, 300003), (77, 272730), (105, 200002), (110, 190911), (154, 136365), (165, 127274), (210, 100001), (231, 90910), (330, 63637), (385, 54546), (462, 45455), (770, 27273), (1155, 18182), (2310, 9091)]

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