21437647

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1283}}^1$

素因数の和:1339

約数の個数: 24

約数和(自身を含む): 28104192

約数和(自身を除く): 6666545

約数列:

[1, 7, 11, 31, 49, 77, 217, 341, 539, 1283, 1519, 2387, 8981, 14113, 16709, 39773, 62867, 98791, 278411, 437503, 691537, 1948877, 3062521, 21437647]

約数ペア:

[(1, 21437647), (7, 3062521), (11, 1948877), (31, 691537), (49, 437503), (77, 278411), (217, 98791), (341, 62867), (539, 39773), (1283, 16709), (1519, 14113), (2387, 8981)]