81366550

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2089}}^1$

素因数の和:2161

約数の個数: 48

約数和(自身を含む): 163270800

約数和(自身を除く): 81904250

約数列:

[1, 2, 5, 10, 19, 25, 38, 41, 50, 82, 95, 190, 205, 410, 475, 779, 950, 1025, 1558, 2050, 2089, 3895, 4178, 7790, 10445, 19475, 20890, 38950, 39691, 52225, 79382, 85649, 104450, 171298, 198455, 396910, 428245, 856490, 992275, 1627331, 1984550, 2141225, 3254662, 4282450, 8136655, 16273310, 40683275, 81366550]

約数ペア:

[(1, 81366550), (2, 40683275), (5, 16273310), (10, 8136655), (19, 4282450), (25, 3254662), (38, 2141225), (41, 1984550), (50, 1627331), (82, 992275), (95, 856490), (190, 428245), (205, 396910), (410, 198455), (475, 171298), (779, 104450), (950, 85649), (1025, 79382), (1558, 52225), (2050, 39691), (2089, 38950), (3895, 20890), (4178, 19475), (7790, 10445)]