21059388

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{193}}^1\times {\mathrm{433}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 61294688

約数和(自身を除く): 40235300

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 193, 252, 386, 433, 579, 772, 866, 1158, 1299, 1351, 1732, 1737, 2316, 2598, 2702, 3031, 3474, 3897, 4053, 5196, 5404, 6062, 6948, 7794, 8106, 9093, 12124, 12159, 15588, 16212, 18186, 24318, 27279, 36372, 48636, 54558, 83569, 109116, 167138, 250707, 334276, 501414, 584983, 752121, 1002828, 1169966, 1504242, 1754949, 2339932, 3008484, 3509898, 5264847, 7019796, 10529694, 21059388]

約数ペア:

[(1, 21059388), (2, 10529694), (3, 7019796), (4, 5264847), (6, 3509898), (7, 3008484), (9, 2339932), (12, 1754949), (14, 1504242), (18, 1169966), (21, 1002828), (28, 752121), (36, 584983), (42, 501414), (63, 334276), (84, 250707), (126, 167138), (193, 109116), (252, 83569), (386, 54558), (433, 48636), (579, 36372), (772, 27279), (866, 24318), (1158, 18186), (1299, 16212), (1351, 15588), (1732, 12159), (1737, 12124), (2316, 9093), (2598, 8106), (2702, 7794), (3031, 6948), (3474, 6062), (3897, 5404), (4053, 5196)]