20995312

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{523}}^1$

素因数の和:737

約数の個数: 40

約数和(自身を含む): 44118704

約数和(自身を除く): 23123392

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 193, 208, 386, 523, 772, 1046, 1544, 2092, 2509, 3088, 4184, 5018, 6799, 8368, 10036, 13598, 20072, 27196, 40144, 54392, 100939, 108784, 201878, 403756, 807512, 1312207, 1615024, 2624414, 5248828, 10497656, 20995312]

約数ペア:

[(1, 20995312), (2, 10497656), (4, 5248828), (8, 2624414), (13, 1615024), (16, 1312207), (26, 807512), (52, 403756), (104, 201878), (193, 108784), (208, 100939), (386, 54392), (523, 40144), (772, 27196), (1046, 20072), (1544, 13598), (2092, 10036), (2509, 8368), (3088, 6799), (4184, 5018)]