287487711

素因数分解:

$3^7\times 7^1\times {\mathrm{89}}^1\times {\mathrm{211}}^1$

素因数の和:328

約数の個数: 64

約数和(自身を含む): 500659200

約数和(自身を除く): 213171489

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 89, 189, 211, 243, 267, 567, 623, 633, 729, 801, 1477, 1701, 1869, 1899, 2187, 2403, 4431, 5103, 5607, 5697, 7209, 13293, 15309, 16821, 17091, 18779, 21627, 39879, 50463, 51273, 56337, 64881, 119637, 131453, 151389, 153819, 169011, 194643, 358911, 394359, 454167, 461457, 507033, 1076733, 1183077, 1362501, 1521099, 3230199, 3549231, 4563297, 10647693, 13689891, 31943079, 41069673, 95829237, 287487711]

約数ペア:

[(1, 287487711), (3, 95829237), (7, 41069673), (9, 31943079), (21, 13689891), (27, 10647693), (63, 4563297), (81, 3549231), (89, 3230199), (189, 1521099), (211, 1362501), (243, 1183077), (267, 1076733), (567, 507033), (623, 461457), (633, 454167), (729, 394359), (801, 358911), (1477, 194643), (1701, 169011), (1869, 153819), (1899, 151389), (2187, 131453), (2403, 119637), (4431, 64881), (5103, 56337), (5607, 51273), (5697, 50463), (7209, 39879), (13293, 21627), (15309, 18779), (16821, 17091)]