21537992

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{5417}}^1$

素因数の和:5501

約数の個数: 32

約数和(自身を含む): 46811520

約数和(自身を除く): 25273528

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 5417, 10834, 21668, 37919, 43336, 75838, 151676, 303352, 384607, 769214, 1538428, 2692249, 3076856, 5384498, 10768996, 21537992]

約数ペア:

[(1, 21537992), (2, 10768996), (4, 5384498), (7, 3076856), (8, 2692249), (14, 1538428), (28, 769214), (56, 384607), (71, 303352), (142, 151676), (284, 75838), (497, 43336), (568, 37919), (994, 21668), (1988, 10834), (3976, 5417)]