21395517

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{941}}^1$

素因数の和:1021

約数の個数: 32

約数和(自身を含む): 34183296

約数和(自身を除く): 12787779

約数列:

[1, 3, 11, 13, 33, 39, 53, 143, 159, 429, 583, 689, 941, 1749, 2067, 2823, 7579, 10351, 12233, 22737, 31053, 36699, 49873, 134563, 149619, 403689, 548603, 648349, 1645809, 1945047, 7131839, 21395517]

約数ペア:

[(1, 21395517), (3, 7131839), (11, 1945047), (13, 1645809), (33, 648349), (39, 548603), (53, 403689), (143, 149619), (159, 134563), (429, 49873), (583, 36699), (689, 31053), (941, 22737), (1749, 12233), (2067, 10351), (2823, 7579)]