21381864

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{929}}^1$

素因数の和:1082

約数の個数: 64

約数和(自身を含む): 61603200

約数和(自身を除く): 40221336

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 137, 168, 274, 411, 548, 822, 929, 959, 1096, 1644, 1858, 1918, 2787, 2877, 3288, 3716, 3836, 5574, 5754, 6503, 7432, 7672, 11148, 11508, 13006, 19509, 22296, 23016, 26012, 39018, 52024, 78036, 127273, 156072, 254546, 381819, 509092, 763638, 890911, 1018184, 1527276, 1781822, 2672733, 3054552, 3563644, 5345466, 7127288, 10690932, 21381864]

約数ペア:

[(1, 21381864), (2, 10690932), (3, 7127288), (4, 5345466), (6, 3563644), (7, 3054552), (8, 2672733), (12, 1781822), (14, 1527276), (21, 1018184), (24, 890911), (28, 763638), (42, 509092), (56, 381819), (84, 254546), (137, 156072), (168, 127273), (274, 78036), (411, 52024), (548, 39018), (822, 26012), (929, 23016), (959, 22296), (1096, 19509), (1644, 13006), (1858, 11508), (1918, 11148), (2787, 7672), (2877, 7432), (3288, 6503), (3716, 5754), (3836, 5574)]