388330047

素因数分解:

$3^2\times 7^2\times {\mathrm{647}}^1\times {\mathrm{1361}}^1$

素因数の和:2028

約数の個数: 36

約数和(自身を含む): 653988816

約数和(自身を除く): 265658769

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 647, 1361, 1941, 4083, 4529, 5823, 9527, 12249, 13587, 28581, 31703, 40761, 66689, 85743, 95109, 200067, 285327, 600201, 880567, 2641701, 6163969, 7925103, 18491907, 43147783, 55475721, 129443349, 388330047]

約数ペア:

[(1, 388330047), (3, 129443349), (7, 55475721), (9, 43147783), (21, 18491907), (49, 7925103), (63, 6163969), (147, 2641701), (441, 880567), (647, 600201), (1361, 285327), (1941, 200067), (4083, 95109), (4529, 85743), (5823, 66689), (9527, 40761), (12249, 31703), (13587, 28581)]