21645872

素因数分解:

$2^4\times {\mathrm{167}}^1\times {\mathrm{8101}}^1$

素因数の和:8276

約数の個数: 20

約数和(自身を含む): 42195216

約数和(自身を除く): 20549344

約数列:

[1, 2, 4, 8, 16, 167, 334, 668, 1336, 2672, 8101, 16202, 32404, 64808, 129616, 1352867, 2705734, 5411468, 10822936, 21645872]

約数ペア:

[(1, 21645872), (2, 10822936), (4, 5411468), (8, 2705734), (16, 1352867), (167, 129616), (334, 64808), (668, 32404), (1336, 16202), (2672, 8101)]