21054261

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{271}}^1$

素因数の和:369

約数の個数: 32

約数和(自身を含む): 31334400

約数和(自身を除く): 10280139

約数列:

[1, 3, 19, 29, 47, 57, 87, 141, 271, 551, 813, 893, 1363, 1653, 2679, 4089, 5149, 7859, 12737, 15447, 23577, 25897, 38211, 77691, 149321, 242003, 369373, 447963, 726009, 1108119, 7018087, 21054261]

約数ペア:

[(1, 21054261), (3, 7018087), (19, 1108119), (29, 726009), (47, 447963), (57, 369373), (87, 242003), (141, 149321), (271, 77691), (551, 38211), (813, 25897), (893, 23577), (1363, 15447), (1653, 12737), (2679, 7859), (4089, 5149)]