About the Number

21101808

21101807 ← → 21101809

2進数表記:1010000011111110011110000

漢数字表記:二千百十万千八百八

素因数分解:

2 4 × 3 1 × 7 1 × 13 1 × 4831 1

素因数の和:4862
約数の個数: 80
約数和(自身を含む): 67106816
約数和(自身を除く): 46005008

約数列:
[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 16, 21, 24, 26, 28, 39, 42, 48, 52, 56, 78, 84, 91, 104, 112, 156, 168, 182, 208, 273, 312, 336, 364, 546, 624, 728, 1092, 1456, 2184, 4368, 4831, 9662, 14493, 19324, 28986, 33817, 38648, 57972, 62803, 67634, 77296, 101451, 115944, 125606, 135268, 188409, 202902, 231888, 251212, 270536, 376818, 405804, 439621, 502424, 541072, 753636, 811608, 879242, 1004848, 1318863, 1507272, 1623216, 1758484, 2637726, 3014544, 3516968, 5275452, 7033936, 10550904, 21101808]

約数ペア:
[(1, 21101808), (2, 10550904), (3, 7033936), (4, 5275452), (6, 3516968), (7, 3014544), (8, 2637726), (12, 1758484), (13, 1623216), (14, 1507272), (16, 1318863), (21, 1004848), (24, 879242), (26, 811608), (28, 753636), (39, 541072), (42, 502424), (48, 439621), (52, 405804), (56, 376818), (78, 270536), (84, 251212), (91, 231888), (104, 202902), (112, 188409), (156, 135268), (168, 125606), (182, 115944), (208, 101451), (273, 77296), (312, 67634), (336, 62803), (364, 57972), (546, 38648), (624, 33817), (728, 28986), (1092, 19324), (1456, 14493), (2184, 9662), (4368, 4831)]

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