20986772

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{5231}}^1$

素因数の和:5311

約数の個数: 24

約数和(自身を含む): 39553920

約数和(自身を除く): 18567148

約数列:

[1, 2, 4, 17, 34, 59, 68, 118, 236, 1003, 2006, 4012, 5231, 10462, 20924, 88927, 177854, 308629, 355708, 617258, 1234516, 5246693, 10493386, 20986772]

約数ペア:

[(1, 20986772), (2, 10493386), (4, 5246693), (17, 1234516), (34, 617258), (59, 355708), (68, 308629), (118, 177854), (236, 88927), (1003, 20924), (2006, 10462), (4012, 5231)]