20808920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47293}}^1$

素因数の和:47315

約数の個数: 32

約数和(自身を含む): 51077520

約数和(自身を除く): 30268600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47293, 94586, 189172, 236465, 378344, 472930, 520223, 945860, 1040446, 1891720, 2080892, 2601115, 4161784, 5202230, 10404460, 20808920]

約数ペア:

[(1, 20808920), (2, 10404460), (4, 5202230), (5, 4161784), (8, 2601115), (10, 2080892), (11, 1891720), (20, 1040446), (22, 945860), (40, 520223), (44, 472930), (55, 378344), (88, 236465), (110, 189172), (220, 94586), (440, 47293)]