21148456

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:266

約数の個数: 64

約数和(自身を含む): 47496960

約数和(自身を除く): 26348504

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 61, 82, 122, 151, 164, 244, 287, 302, 328, 427, 488, 574, 604, 854, 1057, 1148, 1208, 1708, 2114, 2296, 2501, 3416, 4228, 5002, 6191, 8456, 9211, 10004, 12382, 17507, 18422, 20008, 24764, 35014, 36844, 43337, 49528, 64477, 70028, 73688, 86674, 128954, 140056, 173348, 257908, 346696, 377651, 515816, 755302, 1510604, 2643557, 3021208, 5287114, 10574228, 21148456]

約数ペア:

[(1, 21148456), (2, 10574228), (4, 5287114), (7, 3021208), (8, 2643557), (14, 1510604), (28, 755302), (41, 515816), (56, 377651), (61, 346696), (82, 257908), (122, 173348), (151, 140056), (164, 128954), (244, 86674), (287, 73688), (302, 70028), (328, 64477), (427, 49528), (488, 43337), (574, 36844), (604, 35014), (854, 24764), (1057, 20008), (1148, 18422), (1208, 17507), (1708, 12382), (2114, 10004), (2296, 9211), (2501, 8456), (3416, 6191), (4228, 5002)]