21495852

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{197}}^1\times {\mathrm{433}}^1$

素因数の和:647

約数の個数: 72

約数和(自身を含む): 62558496

約数和(自身を除く): 41062644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 197, 252, 394, 433, 591, 788, 866, 1182, 1299, 1379, 1732, 1773, 2364, 2598, 2758, 3031, 3546, 3897, 4137, 5196, 5516, 6062, 7092, 7794, 8274, 9093, 12124, 12411, 15588, 16548, 18186, 24822, 27279, 36372, 49644, 54558, 85301, 109116, 170602, 255903, 341204, 511806, 597107, 767709, 1023612, 1194214, 1535418, 1791321, 2388428, 3070836, 3582642, 5373963, 7165284, 10747926, 21495852]

約数ペア:

[(1, 21495852), (2, 10747926), (3, 7165284), (4, 5373963), (6, 3582642), (7, 3070836), (9, 2388428), (12, 1791321), (14, 1535418), (18, 1194214), (21, 1023612), (28, 767709), (36, 597107), (42, 511806), (63, 341204), (84, 255903), (126, 170602), (197, 109116), (252, 85301), (394, 54558), (433, 49644), (591, 36372), (788, 27279), (866, 24822), (1182, 18186), (1299, 16548), (1379, 15588), (1732, 12411), (1773, 12124), (2364, 9093), (2598, 8274), (2758, 7794), (3031, 7092), (3546, 6062), (3897, 5516), (4137, 5196)]