19928920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{45293}}^1$

素因数の和:45315

約数の個数: 32

約数和(自身を含む): 48917520

約数和(自身を除く): 28988600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 45293, 90586, 181172, 226465, 362344, 452930, 498223, 905860, 996446, 1811720, 1992892, 2491115, 3985784, 4982230, 9964460, 19928920]

約数ペア:

[(1, 19928920), (2, 9964460), (4, 4982230), (5, 3985784), (8, 2491115), (10, 1992892), (11, 1811720), (20, 996446), (22, 905860), (40, 498223), (44, 452930), (55, 362344), (88, 226465), (110, 181172), (220, 90586), (440, 45293)]