20145121460

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{521}}^1\times {\mathrm{7351}}^1$

素因数の和:8144

約数の個数: 48

約数和(自身を含む): 42552905472

約数和(自身を除く): 22407784012

約数列:

[1, 2, 4, 5, 10, 20, 263, 521, 526, 1042, 1052, 1315, 2084, 2605, 2630, 5210, 5260, 7351, 10420, 14702, 29404, 36755, 73510, 137023, 147020, 274046, 548092, 685115, 1370230, 1933313, 2740460, 3829871, 3866626, 7659742, 7733252, 9666565, 15319484, 19149355, 19333130, 38298710, 38666260, 76597420, 1007256073, 2014512146, 4029024292, 5036280365, 10072560730, 20145121460]

約数ペア:

[(1, 20145121460), (2, 10072560730), (4, 5036280365), (5, 4029024292), (10, 2014512146), (20, 1007256073), (263, 76597420), (521, 38666260), (526, 38298710), (1042, 19333130), (1052, 19149355), (1315, 15319484), (2084, 9666565), (2605, 7733252), (2630, 7659742), (5210, 3866626), (5260, 3829871), (7351, 2740460), (10420, 1933313), (14702, 1370230), (29404, 685115), (36755, 548092), (73510, 274046), (137023, 147020)]