21268996

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{191}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 44255232

約数和(自身を除く): 22986236

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 97, 164, 191, 194, 287, 382, 388, 574, 679, 764, 1148, 1337, 1358, 2674, 2716, 3977, 5348, 7831, 7954, 15662, 15908, 18527, 27839, 31324, 37054, 54817, 55678, 74108, 109634, 111356, 129689, 219268, 259378, 518756, 759607, 1519214, 3038428, 5317249, 10634498, 21268996]

約数ペア:

[(1, 21268996), (2, 10634498), (4, 5317249), (7, 3038428), (14, 1519214), (28, 759607), (41, 518756), (82, 259378), (97, 219268), (164, 129689), (191, 111356), (194, 109634), (287, 74108), (382, 55678), (388, 54817), (574, 37054), (679, 31324), (764, 27839), (1148, 18527), (1337, 15908), (1358, 15662), (2674, 7954), (2716, 7831), (3977, 5348)]