21605320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{49103}}^1$

素因数の和:49125

約数の個数: 32

約数和(自身を含む): 53032320

約数和(自身を除く): 31427000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 49103, 98206, 196412, 245515, 392824, 491030, 540133, 982060, 1080266, 1964120, 2160532, 2700665, 4321064, 5401330, 10802660, 21605320]

約数ペア:

[(1, 21605320), (2, 10802660), (4, 5401330), (5, 4321064), (8, 2700665), (10, 2160532), (11, 1964120), (20, 1080266), (22, 982060), (40, 540133), (44, 491030), (55, 392824), (88, 245515), (110, 196412), (220, 98206), (440, 49103)]