20661388

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 41094144

約数和(自身を除く): 20432756

約数列:

[1, 2, 4, 11, 22, 44, 47, 94, 97, 103, 188, 194, 206, 388, 412, 517, 1034, 1067, 1133, 2068, 2134, 2266, 4268, 4532, 4559, 4841, 9118, 9682, 9991, 18236, 19364, 19982, 39964, 50149, 53251, 100298, 106502, 109901, 200596, 213004, 219802, 439604, 469577, 939154, 1878308, 5165347, 10330694, 20661388]

約数ペア:

[(1, 20661388), (2, 10330694), (4, 5165347), (11, 1878308), (22, 939154), (44, 469577), (47, 439604), (94, 219802), (97, 213004), (103, 200596), (188, 109901), (194, 106502), (206, 100298), (388, 53251), (412, 50149), (517, 39964), (1034, 19982), (1067, 19364), (1133, 18236), (2068, 9991), (2134, 9682), (2266, 9118), (4268, 4841), (4532, 4559)]