21509656

素因数分解:

$2^3\times 7^1\times {\mathrm{191}}^1\times {\mathrm{2011}}^1$

素因数の和:2215

約数の個数: 32

約数和(自身を含む): 46356480

約数和(自身を除く): 24846824

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 191, 382, 764, 1337, 1528, 2011, 2674, 4022, 5348, 8044, 10696, 14077, 16088, 28154, 56308, 112616, 384101, 768202, 1536404, 2688707, 3072808, 5377414, 10754828, 21509656]

約数ペア:

[(1, 21509656), (2, 10754828), (4, 5377414), (7, 3072808), (8, 2688707), (14, 1536404), (28, 768202), (56, 384101), (191, 112616), (382, 56308), (764, 28154), (1337, 16088), (1528, 14077), (2011, 10696), (2674, 8044), (4022, 5348)]