21537395

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{97}}^1\times {\mathrm{367}}^1$

素因数の和:491

約数の個数: 24

約数和(自身を含む): 28779072

約数和(自身を除く): 7241677

約数列:

[1, 5, 11, 55, 97, 121, 367, 485, 605, 1067, 1835, 4037, 5335, 11737, 20185, 35599, 44407, 58685, 177995, 222035, 391589, 1957945, 4307479, 21537395]

約数ペア:

[(1, 21537395), (5, 4307479), (11, 1957945), (55, 391589), (97, 222035), (121, 177995), (367, 58685), (485, 44407), (605, 35599), (1067, 20185), (1835, 11737), (4037, 5335)]