21116536

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 47278080

約数和(自身を除く): 26161544

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 71, 94, 113, 142, 188, 226, 284, 329, 376, 452, 497, 568, 658, 791, 904, 994, 1316, 1582, 1988, 2632, 3164, 3337, 3976, 5311, 6328, 6674, 8023, 10622, 13348, 16046, 21244, 23359, 26696, 32092, 37177, 42488, 46718, 56161, 64184, 74354, 93436, 112322, 148708, 186872, 224644, 297416, 377081, 449288, 754162, 1508324, 2639567, 3016648, 5279134, 10558268, 21116536]

約数ペア:

[(1, 21116536), (2, 10558268), (4, 5279134), (7, 3016648), (8, 2639567), (14, 1508324), (28, 754162), (47, 449288), (56, 377081), (71, 297416), (94, 224644), (113, 186872), (142, 148708), (188, 112322), (226, 93436), (284, 74354), (329, 64184), (376, 56161), (452, 46718), (497, 42488), (568, 37177), (658, 32092), (791, 26696), (904, 23359), (994, 21244), (1316, 16046), (1582, 13348), (1988, 10622), (2632, 8023), (3164, 6674), (3337, 6328), (3976, 5311)]