21216552

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{2687}}^1$

素因数の和:2750

約数の個数: 64

約数和(自身を含む): 61931520

約数和(自身を除く): 40714968

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 47, 56, 84, 94, 141, 168, 188, 282, 329, 376, 564, 658, 987, 1128, 1316, 1974, 2632, 2687, 3948, 5374, 7896, 8061, 10748, 16122, 18809, 21496, 32244, 37618, 56427, 64488, 75236, 112854, 126289, 150472, 225708, 252578, 378867, 451416, 505156, 757734, 884023, 1010312, 1515468, 1768046, 2652069, 3030936, 3536092, 5304138, 7072184, 10608276, 21216552]

約数ペア:

[(1, 21216552), (2, 10608276), (3, 7072184), (4, 5304138), (6, 3536092), (7, 3030936), (8, 2652069), (12, 1768046), (14, 1515468), (21, 1010312), (24, 884023), (28, 757734), (42, 505156), (47, 451416), (56, 378867), (84, 252578), (94, 225708), (141, 150472), (168, 126289), (188, 112854), (282, 75236), (329, 64488), (376, 56427), (564, 37618), (658, 32244), (987, 21496), (1128, 18809), (1316, 16122), (1974, 10748), (2632, 8061), (2687, 7896), (3948, 5374)]