21005460

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{5557}}^1$

素因数の和:5582

約数の個数: 96

約数和(自身を含む): 74699520

約数和(自身を除く): 53694060

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 5557, 11114, 16671, 22228, 27785, 33342, 38899, 50013, 55570, 66684, 77798, 83355, 100026, 111140, 116697, 150039, 155596, 166710, 194495, 200052, 233394, 250065, 300078, 333420, 350091, 388990, 466788, 500130, 583485, 600156, 700182, 750195, 777980, 1000260, 1050273, 1166970, 1400364, 1500390, 1750455, 2100546, 2333940, 3000780, 3500910, 4201092, 5251365, 7001820, 10502730, 21005460]

約数ペア:

[(1, 21005460), (2, 10502730), (3, 7001820), (4, 5251365), (5, 4201092), (6, 3500910), (7, 3000780), (9, 2333940), (10, 2100546), (12, 1750455), (14, 1500390), (15, 1400364), (18, 1166970), (20, 1050273), (21, 1000260), (27, 777980), (28, 750195), (30, 700182), (35, 600156), (36, 583485), (42, 500130), (45, 466788), (54, 388990), (60, 350091), (63, 333420), (70, 300078), (84, 250065), (90, 233394), (105, 200052), (108, 194495), (126, 166710), (135, 155596), (140, 150039), (180, 116697), (189, 111140), (210, 100026), (252, 83355), (270, 77798), (315, 66684), (378, 55570), (420, 50013), (540, 38899), (630, 33342), (756, 27785), (945, 22228), (1260, 16671), (1890, 11114), (3780, 5557)]