189998290

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{997}}^1$

素因数の和:1099

約数の個数: 64

約数和(自身を含む): 388022400

約数和(自身を除く): 198024110

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 59, 85, 95, 118, 170, 190, 295, 323, 590, 646, 997, 1003, 1121, 1615, 1994, 2006, 2242, 3230, 4985, 5015, 5605, 9970, 10030, 11210, 16949, 18943, 19057, 33898, 37886, 38114, 58823, 84745, 94715, 95285, 117646, 169490, 189430, 190570, 294115, 322031, 588230, 644062, 999991, 1117637, 1610155, 1999982, 2235274, 3220310, 4999955, 5588185, 9999910, 11176370, 18999829, 37999658, 94999145, 189998290]

約数ペア:

[(1, 189998290), (2, 94999145), (5, 37999658), (10, 18999829), (17, 11176370), (19, 9999910), (34, 5588185), (38, 4999955), (59, 3220310), (85, 2235274), (95, 1999982), (118, 1610155), (170, 1117637), (190, 999991), (295, 644062), (323, 588230), (590, 322031), (646, 294115), (997, 190570), (1003, 189430), (1121, 169490), (1615, 117646), (1994, 95285), (2006, 94715), (2242, 84745), (3230, 58823), (4985, 38114), (5015, 37886), (5605, 33898), (9970, 19057), (10030, 18943), (11210, 16949)]