21299616

素因数分解:

$2^5\times 3^2\times {\mathrm{13}}^1\times {\mathrm{5689}}^1$

素因数の和:5718

約数の個数: 72

約数和(自身を含む): 65241540

約数和(自身を除く): 43941924

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 32, 36, 39, 48, 52, 72, 78, 96, 104, 117, 144, 156, 208, 234, 288, 312, 416, 468, 624, 936, 1248, 1872, 3744, 5689, 11378, 17067, 22756, 34134, 45512, 51201, 68268, 73957, 91024, 102402, 136536, 147914, 182048, 204804, 221871, 273072, 295828, 409608, 443742, 546144, 591656, 665613, 819216, 887484, 1183312, 1331226, 1638432, 1774968, 2366624, 2662452, 3549936, 5324904, 7099872, 10649808, 21299616]

約数ペア:

[(1, 21299616), (2, 10649808), (3, 7099872), (4, 5324904), (6, 3549936), (8, 2662452), (9, 2366624), (12, 1774968), (13, 1638432), (16, 1331226), (18, 1183312), (24, 887484), (26, 819216), (32, 665613), (36, 591656), (39, 546144), (48, 443742), (52, 409608), (72, 295828), (78, 273072), (96, 221871), (104, 204804), (117, 182048), (144, 147914), (156, 136536), (208, 102402), (234, 91024), (288, 73957), (312, 68268), (416, 51201), (468, 45512), (624, 34134), (936, 22756), (1248, 17067), (1872, 11378), (3744, 5689)]