19980136

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{2083}}^1$

素因数の和:2209

約数の個数: 32

約数和(自身を含む): 41263200

約数和(自身を除く): 21283064

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 109, 218, 436, 872, 1199, 2083, 2398, 4166, 4796, 8332, 9592, 16664, 22913, 45826, 91652, 183304, 227047, 454094, 908188, 1816376, 2497517, 4995034, 9990068, 19980136]

約数ペア:

[(1, 19980136), (2, 9990068), (4, 4995034), (8, 2497517), (11, 1816376), (22, 908188), (44, 454094), (88, 227047), (109, 183304), (218, 91652), (436, 45826), (872, 22913), (1199, 16664), (2083, 9592), (2398, 8332), (4166, 4796)]