About the Number

121311216

121311215 ← → 121311217

2進数表記:111001110110000111111110000

漢数字表記:一億二千百三十一万千二百十六

素因数分解:

2 4 × 3 3 × 13 1 × 21601 1

素因数の和:21631
約数の個数: 80
約数和(自身を含む): 375010720
約数和(自身を除く): 253699504

約数列:
[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 27, 36, 39, 48, 52, 54, 72, 78, 104, 108, 117, 144, 156, 208, 216, 234, 312, 351, 432, 468, 624, 702, 936, 1404, 1872, 2808, 5616, 21601, 43202, 64803, 86404, 129606, 172808, 194409, 259212, 280813, 345616, 388818, 518424, 561626, 583227, 777636, 842439, 1036848, 1123252, 1166454, 1555272, 1684878, 2246504, 2332908, 2527317, 3110544, 3369756, 4493008, 4665816, 5054634, 6739512, 7581951, 9331632, 10109268, 13479024, 15163902, 20218536, 30327804, 40437072, 60655608, 121311216]

約数ペア:
[(1, 121311216), (2, 60655608), (3, 40437072), (4, 30327804), (6, 20218536), (8, 15163902), (9, 13479024), (12, 10109268), (13, 9331632), (16, 7581951), (18, 6739512), (24, 5054634), (26, 4665816), (27, 4493008), (36, 3369756), (39, 3110544), (48, 2527317), (52, 2332908), (54, 2246504), (72, 1684878), (78, 1555272), (104, 1166454), (108, 1123252), (117, 1036848), (144, 842439), (156, 777636), (208, 583227), (216, 561626), (234, 518424), (312, 388818), (351, 345616), (432, 280813), (468, 259212), (624, 194409), (702, 172808), (936, 129606), (1404, 86404), (1872, 64803), (2808, 43202), (5616, 21601)]

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