128478519

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{20719}}^1$

素因数の和:20791

約数の個数: 24

約数和(自身を含む): 203636160

約数和(自身を除く): 75157641

約数列:

[1, 3, 9, 13, 39, 53, 117, 159, 477, 689, 2067, 6201, 20719, 62157, 186471, 269347, 808041, 1098107, 2424123, 3294321, 9882963, 14275391, 42826173, 128478519]

約数ペア:

[(1, 128478519), (3, 42826173), (9, 14275391), (13, 9882963), (39, 3294321), (53, 2424123), (117, 1098107), (159, 808041), (477, 269347), (689, 186471), (2067, 62157), (6201, 20719)]