81965950

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2099}}^1$

素因数の和:2193

約数の個数: 48

約数和(自身を含む): 168739200

約数和(自身を除く): 86773250

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 71, 110, 142, 275, 355, 550, 710, 781, 1562, 1775, 2099, 3550, 3905, 4198, 7810, 10495, 19525, 20990, 23089, 39050, 46178, 52475, 104950, 115445, 149029, 230890, 298058, 577225, 745145, 1154450, 1490290, 1639319, 3278638, 3725725, 7451450, 8196595, 16393190, 40982975, 81965950]

約数ペア:

[(1, 81965950), (2, 40982975), (5, 16393190), (10, 8196595), (11, 7451450), (22, 3725725), (25, 3278638), (50, 1639319), (55, 1490290), (71, 1154450), (110, 745145), (142, 577225), (275, 298058), (355, 230890), (550, 149029), (710, 115445), (781, 104950), (1562, 52475), (1775, 46178), (2099, 39050), (3550, 23089), (3905, 20990), (4198, 19525), (7810, 10495)]