21323288

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:288

約数の個数: 64

約数和(自身を含む): 48107520

約数和(自身を除く): 26784232

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 71, 124, 142, 173, 217, 248, 284, 346, 434, 497, 568, 692, 868, 994, 1211, 1384, 1736, 1988, 2201, 2422, 3976, 4402, 4844, 5363, 8804, 9688, 10726, 12283, 15407, 17608, 21452, 24566, 30814, 37541, 42904, 49132, 61628, 75082, 85981, 98264, 123256, 150164, 171962, 300328, 343924, 380773, 687848, 761546, 1523092, 2665411, 3046184, 5330822, 10661644, 21323288]

約数ペア:

[(1, 21323288), (2, 10661644), (4, 5330822), (7, 3046184), (8, 2665411), (14, 1523092), (28, 761546), (31, 687848), (56, 380773), (62, 343924), (71, 300328), (124, 171962), (142, 150164), (173, 123256), (217, 98264), (248, 85981), (284, 75082), (346, 61628), (434, 49132), (497, 42904), (568, 37541), (692, 30814), (868, 24566), (994, 21452), (1211, 17608), (1384, 15407), (1736, 12283), (1988, 10726), (2201, 9688), (2422, 8804), (3976, 5363), (4402, 4844)]