208342940

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{25849}}^1$

素因数の和:25902

約数の個数: 48

約数和(自身を含む): 486393600

約数和(自身を除く): 278050660

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 25849, 51698, 103396, 129245, 258490, 336037, 516980, 672074, 801319, 1344148, 1602638, 1680185, 3205276, 3360370, 4006595, 6720740, 8013190, 10417147, 16026380, 20834294, 41668588, 52085735, 104171470, 208342940]

約数ペア:

[(1, 208342940), (2, 104171470), (4, 52085735), (5, 41668588), (10, 20834294), (13, 16026380), (20, 10417147), (26, 8013190), (31, 6720740), (52, 4006595), (62, 3360370), (65, 3205276), (124, 1680185), (130, 1602638), (155, 1344148), (260, 801319), (310, 672074), (403, 516980), (620, 336037), (806, 258490), (1612, 129245), (2015, 103396), (4030, 51698), (8060, 25849)]