28385720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{64513}}^1$

素因数の和:64535

約数の個数: 32

約数和(自身を含む): 69675120

約数和(自身を除く): 41289400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 64513, 129026, 258052, 322565, 516104, 645130, 709643, 1290260, 1419286, 2580520, 2838572, 3548215, 5677144, 7096430, 14192860, 28385720]

約数ペア:

[(1, 28385720), (2, 14192860), (4, 7096430), (5, 5677144), (8, 3548215), (10, 2838572), (11, 2580520), (20, 1419286), (22, 1290260), (40, 709643), (44, 645130), (55, 516104), (88, 322565), (110, 258052), (220, 129026), (440, 64513)]