28284520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{64283}}^1$

素因数の和:64305

約数の個数: 32

約数和(自身を含む): 69426720

約数和(自身を除く): 41142200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 64283, 128566, 257132, 321415, 514264, 642830, 707113, 1285660, 1414226, 2571320, 2828452, 3535565, 5656904, 7071130, 14142260, 28284520]

約数ペア:

[(1, 28284520), (2, 14142260), (4, 7071130), (5, 5656904), (8, 3535565), (10, 2828452), (11, 2571320), (20, 1414226), (22, 1285660), (40, 707113), (44, 642830), (55, 514264), (88, 321415), (110, 257132), (220, 128566), (440, 64283)]