16164981

素因数分解:

$3^3\times 7^1\times {\mathrm{31}}^2\times {\mathrm{89}}^1$

素因数の和:167

約数の個数: 48

約数和(自身を含む): 28598400

約数和(自身を除く): 12433419

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 89, 93, 189, 217, 267, 279, 623, 651, 801, 837, 961, 1869, 1953, 2403, 2759, 2883, 5607, 5859, 6727, 8277, 8649, 16821, 19313, 20181, 24831, 25947, 57939, 60543, 74493, 85529, 173817, 181629, 256587, 521451, 598703, 769761, 1796109, 2309283, 5388327, 16164981]

約数ペア:

[(1, 16164981), (3, 5388327), (7, 2309283), (9, 1796109), (21, 769761), (27, 598703), (31, 521451), (63, 256587), (89, 181629), (93, 173817), (189, 85529), (217, 74493), (267, 60543), (279, 57939), (623, 25947), (651, 24831), (801, 20181), (837, 19313), (961, 16821), (1869, 8649), (1953, 8277), (2403, 6727), (2759, 5859), (2883, 5607)]