16681805

素因数分解:

$5^1\times 7^3\times {\mathrm{71}}^1\times {\mathrm{137}}^1$

素因数の和:234

約数の個数: 32

約数和(自身を含む): 23846400

約数和(自身を除く): 7164595

約数列:

[1, 5, 7, 35, 49, 71, 137, 245, 343, 355, 497, 685, 959, 1715, 2485, 3479, 4795, 6713, 9727, 17395, 24353, 33565, 46991, 48635, 68089, 121765, 234955, 340445, 476623, 2383115, 3336361, 16681805]

約数ペア:

[(1, 16681805), (5, 3336361), (7, 2383115), (35, 476623), (49, 340445), (71, 234955), (137, 121765), (245, 68089), (343, 48635), (355, 46991), (497, 33565), (685, 24353), (959, 17395), (1715, 9727), (2485, 6713), (3479, 4795)]