20984372

素因数分解:

$2^2\times {\mathrm{23}}^2\times {\mathrm{47}}^1\times {\mathrm{211}}^1$

素因数の和:308

約数の個数: 36

約数和(自身を含む): 39391296

約数和(自身を除く): 18406924

約数列:

[1, 2, 4, 23, 46, 47, 92, 94, 188, 211, 422, 529, 844, 1058, 1081, 2116, 2162, 4324, 4853, 9706, 9917, 19412, 19834, 24863, 39668, 49726, 99452, 111619, 223238, 228091, 446476, 456182, 912364, 5246093, 10492186, 20984372]

約数ペア:

[(1, 20984372), (2, 10492186), (4, 5246093), (23, 912364), (46, 456182), (47, 446476), (92, 228091), (94, 223238), (188, 111619), (211, 99452), (422, 49726), (529, 39668), (844, 24863), (1058, 19834), (1081, 19412), (2116, 9917), (2162, 9706), (4324, 4853)]