20985860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149899}}^1$

素因数の和:149915

約数の個数: 24

約数和(自身を含む): 50366400

約数和(自身を除く): 29380540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149899, 299798, 599596, 749495, 1049293, 1498990, 2098586, 2997980, 4197172, 5246465, 10492930, 20985860]

約数ペア:

[(1, 20985860), (2, 10492930), (4, 5246465), (5, 4197172), (7, 2997980), (10, 2098586), (14, 1498990), (20, 1049293), (28, 749495), (35, 599596), (70, 299798), (140, 149899)]