20124760

素因数分解:

$2^3\times 5^1\times {\mathrm{263}}^1\times {\mathrm{1913}}^1$

素因数の和:2187

約数の個数: 32

約数和(自身を含む): 45476640

約数和(自身を除く): 25351880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 263, 526, 1052, 1315, 1913, 2104, 2630, 3826, 5260, 7652, 9565, 10520, 15304, 19130, 38260, 76520, 503119, 1006238, 2012476, 2515595, 4024952, 5031190, 10062380, 20124760]

約数ペア:

[(1, 20124760), (2, 10062380), (4, 5031190), (5, 4024952), (8, 2515595), (10, 2012476), (20, 1006238), (40, 503119), (263, 76520), (526, 38260), (1052, 19130), (1315, 15304), (1913, 10520), (2104, 9565), (2630, 7652), (3826, 5260)]