21171852

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2381}}^1$

素因数の和:2423

約数の個数: 72

約数和(自身を含む): 60693360

約数和(自身を除く): 39521508

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 52, 57, 76, 78, 114, 117, 156, 171, 228, 234, 247, 342, 468, 494, 684, 741, 988, 1482, 2223, 2381, 2964, 4446, 4762, 7143, 8892, 9524, 14286, 21429, 28572, 30953, 42858, 45239, 61906, 85716, 90478, 92859, 123812, 135717, 180956, 185718, 271434, 278577, 371436, 407151, 542868, 557154, 588107, 814302, 1114308, 1176214, 1628604, 1764321, 2352428, 3528642, 5292963, 7057284, 10585926, 21171852]

約数ペア:

[(1, 21171852), (2, 10585926), (3, 7057284), (4, 5292963), (6, 3528642), (9, 2352428), (12, 1764321), (13, 1628604), (18, 1176214), (19, 1114308), (26, 814302), (36, 588107), (38, 557154), (39, 542868), (52, 407151), (57, 371436), (76, 278577), (78, 271434), (114, 185718), (117, 180956), (156, 135717), (171, 123812), (228, 92859), (234, 90478), (247, 85716), (342, 61906), (468, 45239), (494, 42858), (684, 30953), (741, 28572), (988, 21429), (1482, 14286), (2223, 9524), (2381, 8892), (2964, 7143), (4446, 4762)]