16989945

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:182

約数の個数: 64

約数和(自身を含む): 32845824

約数和(自身を除く): 15855879

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 53, 71, 105, 129, 159, 213, 215, 265, 301, 355, 371, 497, 645, 795, 903, 1065, 1113, 1491, 1505, 1855, 2279, 2485, 3053, 3763, 4515, 5565, 6837, 7455, 9159, 11289, 11395, 15265, 15953, 18815, 21371, 26341, 34185, 45795, 47859, 56445, 64113, 79023, 79765, 106855, 131705, 161809, 239295, 320565, 395115, 485427, 809045, 1132663, 2427135, 3397989, 5663315, 16989945]

約数ペア:

[(1, 16989945), (3, 5663315), (5, 3397989), (7, 2427135), (15, 1132663), (21, 809045), (35, 485427), (43, 395115), (53, 320565), (71, 239295), (105, 161809), (129, 131705), (159, 106855), (213, 79765), (215, 79023), (265, 64113), (301, 56445), (355, 47859), (371, 45795), (497, 34185), (645, 26341), (795, 21371), (903, 18815), (1065, 15953), (1113, 15265), (1491, 11395), (1505, 11289), (1855, 9159), (2279, 7455), (2485, 6837), (3053, 5565), (3763, 4515)]