21541278

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{263}}^1$

素因数の和:369

約数の個数: 64

約数和(自身を含む): 50637312

約数和(自身を除く): 29096034

約数列:

[1, 2, 3, 6, 11, 17, 22, 33, 34, 51, 66, 73, 102, 146, 187, 219, 263, 374, 438, 526, 561, 789, 803, 1122, 1241, 1578, 1606, 2409, 2482, 2893, 3723, 4471, 4818, 5786, 7446, 8679, 8942, 13413, 13651, 17358, 19199, 26826, 27302, 38398, 40953, 49181, 57597, 81906, 98362, 115194, 147543, 211189, 295086, 326383, 422378, 633567, 652766, 979149, 1267134, 1958298, 3590213, 7180426, 10770639, 21541278]

約数ペア:

[(1, 21541278), (2, 10770639), (3, 7180426), (6, 3590213), (11, 1958298), (17, 1267134), (22, 979149), (33, 652766), (34, 633567), (51, 422378), (66, 326383), (73, 295086), (102, 211189), (146, 147543), (187, 115194), (219, 98362), (263, 81906), (374, 57597), (438, 49181), (526, 40953), (561, 38398), (789, 27302), (803, 26826), (1122, 19199), (1241, 17358), (1578, 13651), (1606, 13413), (2409, 8942), (2482, 8679), (2893, 7446), (3723, 5786), (4471, 4818)]