21686868

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{2099}}^1$

素因数の和:2157

約数の個数: 72

約数和(自身を含む): 64209600

約数和(自身を除く): 42522732

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 41, 42, 63, 82, 84, 123, 126, 164, 246, 252, 287, 369, 492, 574, 738, 861, 1148, 1476, 1722, 2099, 2583, 3444, 4198, 5166, 6297, 8396, 10332, 12594, 14693, 18891, 25188, 29386, 37782, 44079, 58772, 75564, 86059, 88158, 132237, 172118, 176316, 258177, 264474, 344236, 516354, 528948, 602413, 774531, 1032708, 1204826, 1549062, 1807239, 2409652, 3098124, 3614478, 5421717, 7228956, 10843434, 21686868]

約数ペア:

[(1, 21686868), (2, 10843434), (3, 7228956), (4, 5421717), (6, 3614478), (7, 3098124), (9, 2409652), (12, 1807239), (14, 1549062), (18, 1204826), (21, 1032708), (28, 774531), (36, 602413), (41, 528948), (42, 516354), (63, 344236), (82, 264474), (84, 258177), (123, 176316), (126, 172118), (164, 132237), (246, 88158), (252, 86059), (287, 75564), (369, 58772), (492, 44079), (574, 37782), (738, 29386), (861, 25188), (1148, 18891), (1476, 14693), (1722, 12594), (2099, 10332), (2583, 8396), (3444, 6297), (4198, 5166)]