28942940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8563}}^1$

素因数の和:8598

約数の個数: 36

約数和(自身を含む): 65822904

約数和(自身を除く): 36879964

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 8563, 17126, 34252, 42815, 85630, 111319, 171260, 222638, 445276, 556595, 1113190, 1447147, 2226380, 2894294, 5788588, 7235735, 14471470, 28942940]

約数ペア:

[(1, 28942940), (2, 14471470), (4, 7235735), (5, 5788588), (10, 2894294), (13, 2226380), (20, 1447147), (26, 1113190), (52, 556595), (65, 445276), (130, 222638), (169, 171260), (260, 111319), (338, 85630), (676, 42815), (845, 34252), (1690, 17126), (3380, 8563)]