21604016

素因数分解:

$2^4\times 7^1\times {\mathrm{67}}^1\times {\mathrm{2879}}^1$

素因数の和:2961

約数の個数: 40

約数和(自身を含む): 48568320

約数和(自身を除く): 26964304

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 67, 112, 134, 268, 469, 536, 938, 1072, 1876, 2879, 3752, 5758, 7504, 11516, 20153, 23032, 40306, 46064, 80612, 161224, 192893, 322448, 385786, 771572, 1350251, 1543144, 2700502, 3086288, 5401004, 10802008, 21604016]

約数ペア:

[(1, 21604016), (2, 10802008), (4, 5401004), (7, 3086288), (8, 2700502), (14, 1543144), (16, 1350251), (28, 771572), (56, 385786), (67, 322448), (112, 192893), (134, 161224), (268, 80612), (469, 46064), (536, 40306), (938, 23032), (1072, 20153), (1876, 11516), (2879, 7504), (3752, 5758)]