19984844

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:446

約数の個数: 36

約数和(自身を含む): 38833872

約数和(自身を除く): 18849028

約数列:

[1, 2, 4, 11, 22, 44, 121, 157, 242, 263, 314, 484, 526, 628, 1052, 1727, 2893, 3454, 5786, 6908, 11572, 18997, 31823, 37994, 41291, 63646, 75988, 82582, 127292, 165164, 454201, 908402, 1816804, 4996211, 9992422, 19984844]

約数ペア:

[(1, 19984844), (2, 9992422), (4, 4996211), (11, 1816804), (22, 908402), (44, 454201), (121, 165164), (157, 127292), (242, 82582), (263, 75988), (314, 63646), (484, 41291), (526, 37994), (628, 31823), (1052, 18997), (1727, 11572), (2893, 6908), (3454, 5786)]