21089704

素因数分解:

$2^3\times {\mathrm{37}}^1\times {\mathrm{71249}}^1$

素因数の和:71292

約数の個数: 16

約数和(自身を含む): 40612500

約数和(自身を除く): 19522796

約数列:

[1, 2, 4, 8, 37, 74, 148, 296, 71249, 142498, 284996, 569992, 2636213, 5272426, 10544852, 21089704]

約数ペア:

[(1, 21089704), (2, 10544852), (4, 5272426), (8, 2636213), (37, 569992), (74, 284996), (148, 142498), (296, 71249)]