51688900

素因数分解:

$2^2\times 5^2\times {\mathrm{401}}^1\times {\mathrm{1289}}^1$

素因数の和:1704

約数の個数: 36

約数和(自身を含む): 112531860

約数和(自身を除く): 60842960

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 401, 802, 1289, 1604, 2005, 2578, 4010, 5156, 6445, 8020, 10025, 12890, 20050, 25780, 32225, 40100, 64450, 128900, 516889, 1033778, 2067556, 2584445, 5168890, 10337780, 12922225, 25844450, 51688900]

約数ペア:

[(1, 51688900), (2, 25844450), (4, 12922225), (5, 10337780), (10, 5168890), (20, 2584445), (25, 2067556), (50, 1033778), (100, 516889), (401, 128900), (802, 64450), (1289, 40100), (1604, 32225), (2005, 25780), (2578, 20050), (4010, 12890), (5156, 10025), (6445, 8020)]