19942288

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{1153}}^1$

素因数の和:1231

約数の個数: 40

約数和(自身を含む): 41211648

約数和(自身を除く): 21269360

約数列:

[1, 2, 4, 8, 16, 23, 46, 47, 92, 94, 184, 188, 368, 376, 752, 1081, 1153, 2162, 2306, 4324, 4612, 8648, 9224, 17296, 18448, 26519, 53038, 54191, 106076, 108382, 212152, 216764, 424304, 433528, 867056, 1246393, 2492786, 4985572, 9971144, 19942288]

約数ペア:

[(1, 19942288), (2, 9971144), (4, 4985572), (8, 2492786), (16, 1246393), (23, 867056), (46, 433528), (47, 424304), (92, 216764), (94, 212152), (184, 108382), (188, 106076), (368, 54191), (376, 53038), (752, 26519), (1081, 18448), (1153, 17296), (2162, 9224), (2306, 8648), (4324, 4612)]