21707950

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1361}}^1$

素因数の和:1413

約数の個数: 48

約数和(自身を含む): 45599760

約数和(自身を除く): 23891810

約数列:

[1, 2, 5, 10, 11, 22, 25, 29, 50, 55, 58, 110, 145, 275, 290, 319, 550, 638, 725, 1361, 1450, 1595, 2722, 3190, 6805, 7975, 13610, 14971, 15950, 29942, 34025, 39469, 68050, 74855, 78938, 149710, 197345, 374275, 394690, 434159, 748550, 868318, 986725, 1973450, 2170795, 4341590, 10853975, 21707950]

約数ペア:

[(1, 21707950), (2, 10853975), (5, 4341590), (10, 2170795), (11, 1973450), (22, 986725), (25, 868318), (29, 748550), (50, 434159), (55, 394690), (58, 374275), (110, 197345), (145, 149710), (275, 78938), (290, 74855), (319, 68050), (550, 39469), (638, 34025), (725, 29942), (1361, 15950), (1450, 14971), (1595, 13610), (2722, 7975), (3190, 6805)]