21041120

素因数分解:

$2^5\times 5^1\times {\mathrm{131507}}^1$

素因数の和:131522

約数の個数: 24

約数和(自身を含む): 49710024

約数和(自身を除く): 28668904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 131507, 263014, 526028, 657535, 1052056, 1315070, 2104112, 2630140, 4208224, 5260280, 10520560, 21041120]

約数ペア:

[(1, 21041120), (2, 10520560), (4, 5260280), (5, 4208224), (8, 2630140), (10, 2104112), (16, 1315070), (20, 1052056), (32, 657535), (40, 526028), (80, 263014), (160, 131507)]